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If-1 is a zero of the polynomial f(x)=x^2-7x-8,then calculate the other zero

Posted by Kanishka Sree Muthusamy 4 years, 6 months ago

CBSE > Class 10 > Mathematics

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Prove that Root3 + root5 is irrational

Posted by Saviti Saviti 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Payal Kansyakar 4 years, 5 months ago

Let the possible root 3+root5 are rational in the form of p by q and q not equal to 0 Root 3+root5=p/q

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Kanishka Sree Muthusamy 4 years, 5 months ago

Let as assume on contrary that : √3 + √5 is a rational number. Then there exists co - prime integers p and q such that ⇒ √3 is a rational number . But this contradicts the fact that √3 is irrational. So, our assumption is wrong. Hence, √3 + √5 is irrational.

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What is the hcf of 13 and 72 by Euclid's theorem

Posted by B Vedhu 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Denish Kotia 4 years, 6 months ago

Using Euclid's Division Lemma a=bq+r Where, 0<_ r<b a=72, b=13 72=13×5+7 a=13, b=7 13=7×1+6 a=7, b=6 7=6×1+1 a=6, b=1 6=1×6+0 Therefore, HCF of 72 and 13 is 1.

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Shashank Sivaram 4 years, 6 months ago

The HCF (72, 13) by Euclid's algorithm/theorem is: a = bq + r (0<_r<b) 72 = 13 x 5 + 7 (a = 72, b = 13) 13 = 7 x 1 + 6 (a = 13, b = 7) 7 = 6 x 1 + 1 (a = 7, b = 6) 6 = 1 x 6 + 0 (a = 6, b = 1) So, HCF (72, 13) is 1.

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Check wheather 6 power n Can end with the digit 0 for any natural number n .

Posted by Tummi Bhavana Sree 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Yash Phougat 4 years, 6 months ago

No...

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Shashank Baghel 4 years, 6 months ago

No because 6^n= (2^n*3^n) hence there are exist no pair of 2^n*5^n factors.

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Exampler

Posted by Jatin Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Ritika Ritika 4 years, 6 months ago

Very good,that can be an example for others

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D and E are points on the sides CA and CB respectively of a triangle ABC right angled at C prove that (AE) 2 + (BD ) 2 =2(AC) 2 + ( BC ) 2

Posted by Rashmi Joshi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Karan Kumar 4 years, 6 months ago

Area of a triangle

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A mall is constructing

Posted by Neeshu Sharma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

Please ask question with complete information.

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find a quadratic polynomial each with the two zeroes as below : (i) -1,7

Posted by Karan Kumar 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Mahira Srivastava 4 years, 6 months ago

Here is the sol : 1. Sum of the zeroes -1+7=6 2. Product of zeroes -1×7=-7 So the formula is , X² - (sum of zeroes)x + product of zeroes So the answer is X²-6x-7

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Payal Rajawat 4 years, 6 months ago

Alpha = -b/a = -1 Beta = c/a = 7 Quadratic polynomial. = x^2 + x + 7

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Draw a line segment of length 7.6cm and divide it into the ratio 5:8. Measures the two parts

Posted by Ritika Rani 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

Step 1: Draw segment AB of length 7.6 cm using a ruler.
Step 2: Draw a ray AC having an acute angle with line AB.
Step 3: Mark 13 equidistant points on ray AC, A1,A2,A3,...,A13
Step 4: Join A13 to B
Step 5: Draw A5P parallel to A13B.
Point P divides AB in the ratio 5:8. Measuring the lengths, we get AP=2.9 cm and PB=4.7 cm.

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Find all the zeroes of 2x⁴–3x³–3x²+6x–2,if you know that teo of the zeroes are _/2 and –_/2.

Posted by Denish Kotia 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Mina 4 years, 6 months ago

4 zeros

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Lakshay Sharma 4 years, 6 months ago

We know that √2 and -√2 are the zeroes of p(x) Therefore ...... (x - √2) and (x + √2) are the factors of p(x) It means product of factor also a factor = X² - 2 = g(x) Devide p(x) by g(x) We Get - q(x) = 2x² - 3x +1 By using slitting the middle term method ------ q(x) = 2x² - 3x + 1 = 0 = 2x² - 2x -x + 1 = 0 = 2x( x -1) -1 (x-1) = 0 = (2x-1) (x-1) = 0 Other two zeroes are ----- i) (2x-1) =0 = x = ½ ii) (x-1) = 0 x = 1 Hope its help you .........

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Kskd

Posted by Alok Rauta 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Muskan Singh 4 years, 6 months ago

Gfgfd

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If one zero are polynomial (a ke power 2+9)x ke power 2+13x+6a is reciprocal other find value of a

Posted by Vanshika Agrawal 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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The zeros of the polynomial 4x²+5√2x-3

Posted by Ankit Thakur 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Mahira Srivastava 4 years, 6 months ago

( Root 2x + 3 ) ( 2root2x-1) = 0

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Derive the relationship between zeroes and coefficient

Posted by S J 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the HCF of1008 and 1080 by prime Factoriston method

Posted by Neetu Yadav 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Krishnakumar Lavanya 4 years, 6 months ago

Answer: 72

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Sia ? 4 years, 6 months ago

1008 = 2*2*2*2*3*3*7
1080=2*2*2*3*3*3*5
hcf is common factors of both the numbers
hcf(1008,1080) = 2*2*2*3*3=72

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(4x)-4x-3

Posted by Ashish Kumar 4 years, 6 months ago

CBSE > Class 10 > Mathematics

3 answers

Shubh Madheshiya 4 years, 6 months ago

-३

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Vijay N 4 years, 6 months ago

-3

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Sandesh Singh 4 years, 6 months ago

-3

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There are two linear equations; ax+by+c= 0 and px+qy+r=0 has unique solution, write the condition for unique solution for these two equations.

Posted by Aayush Karole 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Kritika Jolly 4 years, 6 months ago

Hello

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If one root of the quadratic equation 3×2+px+4=0 is 2/3, then find the value of p and the other root of the equation

Posted by Aswin Unnj 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

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Determine the ratio in which the point P (m, 6) divides the join of A (-4, 3) and B (2, 8). Also find the value of m

Posted by Tom Cruz 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the HCF of225 and745 using Euclid algorithm

Posted by Dibakar Nahak 4 years, 6 months ago

CBSE > Class 10 > Mathematics

3 answers

V. Parthasarathi Vasudevan 4 years, 6 months ago

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Yuvraj Singh 4 years, 6 months ago

Gffjk?

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Shubh Madheshiya 4 years, 6 months ago

745=225×3+70 225=70*3+15 70=15*4+10 15=10*1+5 10=5*2+0 5is HCF of 225and725

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SinA 2/3 find cosA

Posted by Arun Kumar 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Shubh Madheshiya 4 years, 6 months ago

CosA=√1-4/9 =√5/9

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if alpha and beta are the zeros of quadratic polynomial f(x)=x^2-4x+3 find the value of beta/alpha + alpha/beta

Posted by Swati Singh 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Laxminarayan Bainsla 4 years, 6 months ago

Hello From where are you

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Laxminarayan Bainsla 4 years, 6 months ago

First find alpha and beta. By the formula which is . Alpha =-b+√b^2-4ac/2a. And for beta =-b-√b^2-4ac/2ac Then put the value of alpha and beta in your question

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Prove that 5+3√7 is irrational.

Posted by Krish Bhutiya 4 years, 6 months ago

CBSE > Class 10 > Mathematics

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Solve the following system of linear equations graphically: а) 3x+у – 11 = 0 X-y + 1 = 0 b)x+y=3 2x+5y= 12 Shade the region bounded by these lines and y-axis. Also, find the area of the region bounded by the lines and y-axis.

Posted by Yuvraj Aggarwal 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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For any two positive integers a and b , there exists unique integers q and r such that a=b q + r. If b=4, then which is not the value of r ? (a) 1 (b) 2 (c) 3 (d) 4

Posted by Abdul Samad Saifi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Q1. Prove that there is no natural number for which 12h ends with the digit zero.

Posted by Krish Bhutiya 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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3/x+1+4/x-1=29/4x+1 solve for x

Posted by Hibah Fathima Mudhol 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

To experimentally find the hcf of 2 numbers based on the euclid division lemma

Posted by Atharv Patil 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the quadratic polynomial whose zeros are 2/3 and -1/4 . Verify the relation between the coefficient and the zeros of the polynomial.

Posted by Indrajeet Kumar 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Adithya Dev A 4 years, 6 months ago

s = 2/3 - 1/4 = 8 - 3/12 = 5/12.// p = 2/3 * -1/4 = -2/12.// Therefore, p(x) = k (x^2 - sx + p) = k (x^2 - 5/12 x - 2/12) = k (12x^2 - 5x - 2).// According to the relation between zeroes and coefficients in quadratic polynomial, s = -b/a. 5/12 = -(-5)/12 = 5/12// p = c/a. -2/12 = -(2)/12 = -2/12//

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Find the quadratic polynomial whose sum and product of zeroes are√2+1 and 1/√2+1

Posted by Sneha Vishnoi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

3 answers

Amrit Raj 4 years, 6 months ago

Let the quadratic polynomial be =ax²+bx+c also, $ and & are zeroes of given polynomial so, Since, $+&=-b/a =) √2+1+1/√2+1=-b/a =) 2√2=-b/a also, $•&=c/a =) √2+1×1/√2+1=c/a =) 1 =c/a So we get a=1 b=-2√2 C=1 Hence the required polynomial is X²-2√2x+1=0 ans.

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Adithya Dev A 4 years, 6 months ago

S = √2 + 1. P = 1/√2 + 1. Therefore, polynomial p(x) = k (x^2 - Sx + P) = k (x^2 - (√2 + 1)x + 1/√2 + 1 = k [(√2 + 1) x^2 - (3 + 2√2) x + 1]//

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Sia ? 4 years, 6 months ago