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a4+a4=?

Posted by Arshalan Khan 7 years, 10 months ago

CBSE > Class 09 > Mathematics

3 answers

Rashmi Bajpayee 7 years, 10 months ago

2a⁴

0Thank You

Patel Heli K 7 years, 10 months ago

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Aman Kumar 7 years, 10 months ago

4a+4a=8a

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What is the sum of 90–A/2

Posted by Lokesh Kumar 7 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Patel Heli K 7 years, 10 months ago

The answer is 45

0Thank You

Adnan Guard 7 years, 10 months ago

A=2÷90 =45

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How can we solve the problem

Posted by Amal Jose 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Number systems all

Posted by Lakshay Agarwal 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Which of the following rational numbers have terminating decimal representation 3/5 or 2/13 or 40/27 or 23/7

Posted by Keshav Singla 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Suhani Bisht 7 years, 10 months ago

2/13 , 40/27 ,23/7

2Thank You

ANSWER

If x-2 is a factor of the polynomial root2xraiseto2+kx+3 (root of two muliplyxraise to2+k multiplyx+3).Find value of k.

Posted by Reena Karim 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Rashmi Bajpayee 7 years, 10 months ago

Given: $p\left( x \right) = \sqrt 2 {x^2} + kx + 3$

If (x - 2) is a factor of p(x), then

p(2) = 0

=> $\sqrt 2 {\left( 2 \right)^2} + k\left( 2 \right) + 3 = 0$

=> $4\sqrt 2 + 2k + 3 = 0$

=> $2k = - 4\sqrt 2 - 3$

=> $k = {{ - \left( {4\sqrt 2 + 3} \right)} \over 2}$

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X4+x2+25

Posted by Akanksha Nigam 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Represent root 4.3 on a number line.

Posted by Prabhjot S 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If x= 3 root 2+root 3 then find the value of x^3+1/x^3

Posted by Ishika Jain 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Rashmi Bajpayee 7 years, 10 months ago

x = $3\sqrt 2 + \sqrt 3$

Then, ${1 \over x} = {1 \over {3\sqrt 2 + \sqrt 3 }} \times {{3\sqrt 2 - \sqrt 3 } \over {3\sqrt 2 - \sqrt 3 }} = {{3\sqrt 2 - \sqrt 3 } \over {15}}$

And $x + {1 \over x} = 3\sqrt 2 + \sqrt 3 + {{3\sqrt 2 - \sqrt 3 } \over {15}}$ = ${{45\sqrt 2 + 15\sqrt 3 + 3\sqrt 2 - \sqrt 3 } \over {15}}$ = ${{48\sqrt 2 + 14\sqrt 3 } \over {15}}$

Now, ${x^3} + {1 \over {{x^3}}} = \left( {x + {1 \over x}} \right)\left( {{x^2} + {1 \over {{x^2}}} - x \times {1 \over x}} \right)$

= $\left( {x + {1 \over x}} \right)\left[ {{{\left( {x + {1 \over x}} \right)}^2} - 2 \times x \times {1 \over x} - 1} \right]$

= $\left( {x + {1 \over x}} \right)\left[ {{{\left( {x + {1 \over x}} \right)}^2} - 3} \right]$

= $\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)\left[ {{{\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)}^2} - 3} \right]$

= $\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)\left[ {{{4608 + 588 + 1344\sqrt 6 } \over {225}} - 3} \right]$

= $\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)\left[ {{{5196 + 1344\sqrt 6 - 675} \over {225}}} \right]$

= $\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)\left( {{{4521 + 1344\sqrt 6 } \over {225}}} \right)$

= $\left( {{{48\sqrt 2 + 14\sqrt 3 } \over {15}}} \right)\left( {{{1507 + 448\sqrt 6 } \over {75}}} \right)$

= ${{72336\sqrt 2 + 21504\sqrt {12} + 21098\sqrt 3 + 6272\sqrt {18} } \over {1125}}$

= ${{72336\sqrt 2 + 43008\sqrt 3 + 21098\sqrt 3 + 18816\sqrt 2 } \over {1125}}$

= ${{91152\sqrt 2 + 64106\sqrt 3 } \over {1125}}$

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Insert a rational number and irrational number b/w 2 and 3 ?

Posted by Sahil Pachouri 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Rubham Singh 7 years, 10 months ago

5/2

1Thank You

ANSWER

Find the measure of an angle whose supplement is four times of its complement

Posted by Samyak Mehta 7 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Arpit Mishra 7 years, 10 months ago

Angle +compliment angle=90' X+4x=90' 5x=90' X=90/5 X=18' Compliment=4×18' =72'

0Thank You

Rubham Singh 7 years, 10 months ago

30&60

2Thank You

ANSWER

Triangle

Posted by Aniket Shil 7 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Hi M Anshu Pathak 7 years, 10 months ago

a figure which is formed by three line segments is called triangle

0Thank You

Soumya Ghoshal 7 years, 10 months ago

In which figure have three side and addition of three angles is 180°,this is called triangle.

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Gshdhdh

Posted by Surendra Saroj 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Find the once digit number of 2 raised to power 15324

Posted by Vyom Singh 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Aman Kumar 7 years, 10 months ago

0Thank You

ANSWER

What is rational numbers

Posted by Zahabiya Talwala 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Sridarsan Sah 7 years, 10 months ago

The numbers which can be written in ( p/q ) form are called as rational numbers. Example -7/3 ,5,0,1,-1

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Draw the graphs of x=4, x+5=0 & y-1=0

Posted by Sanket Mane 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If the sides of a triangle are doubled then what is the percentage increase in its Area

Posted by Naresh Jangir 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Kshitiz Kashyap 7 years, 10 months ago

300 percent

0Thank You

ANSWER

Find two irrational numbers between 2&3

Posted by Sanket Mane 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Sridarsan Sah 7 years, 10 months ago

To find irrational numbers we can write our phone number after the decimal i.e, 2.125437957....and 2.24765327890......

1Thank You

ANSWER

Find the area of equilateral triangle whose side is x cm

Posted by Rajat Jain 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Soumya Ghoshal 7 years, 10 months ago

Let the side x cm.

Semi-Perimeter = $\frac{{(x+x+x)}}{2}=\frac{{3x}}{2}$ cm

Now , area of the equilateral triangle is

= $\sqrt{{(3x/2)(x/2)(x/2)(x/2)}}$

= $\frac{{√3x^2}}{4}$ cm²

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ANSWER

Prove that the sum of the angels of a triangle is 180 degree. In the given figure AB||CD, find the value of x, y and z.

Posted by Prashant Kumar, 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Sumof any two side of the triangle is greater than twice the median with respect to the third side

Posted by Srikant Kumar 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

52773636

Posted by Nitin Sharma 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Hans Raj 7 years, 10 months ago

52773636

= 5x10000000 + 2x1000000 + 7x100000 x 7x10000 x 3000 + 6x100 + 3x10 + 6

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2x+34x 00

Posted by Amit Singh 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Ahinav Pandey 7 years, 10 months ago

36x

1Thank You

ANSWER

The sum of all the four interior angles is 360 proved

Posted by Vanshita Yadav 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

(a+b)²

Posted by Abhishek Keshri 7 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Hans Raj 7 years, 10 months ago

(a + b )² = a² + 2ab + b²

0Thank You

Abhishek Keshri 7 years, 10 months ago

A²+b²+2ab

2Thank You

ANSWER

I am the student of 9th standard i cant understand geometry and I see the last year paper parten it was too much hard please help me in geometry subject of chap 6 lines and angle

Posted by Harsh Singh Singh 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is the angle of union

Posted by Patel Heli K 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Hans Raj 7 years, 10 months ago

The angle of union is formed by two rays

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25-1÷3×3×16

Posted by Harleen Thind 7 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Hans Raj 7 years, 10 months ago

25 - (1 x 1/3) x 3 x 16

= 25 - (1/3 x 3 x 16)

= 25 - 16

= 9

0Thank You

Dhruva Parashar 7 years, 10 months ago

1Thank You

ANSWER

If 2x+3y=12 and xy=6 find 8x*x*x + 27*y*y*y

Posted by Sahana Uppal 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Dharmendra Kumar 7 years, 10 months ago

8x³+27y³=2³x³+3³y³=(2x)³+(3y)³ [by using aⁿbⁿ=(ab)ⁿ]

Now by using identity

(a+b)³=a³+b³+3ab(a+b)

a³+b³=(a+b)³ - 3ab(a+b) ---------(1)

Now 8x³+27y³=(2x)³+(3y)³

= (2x+3y)³-3(2x)(3y)(2x+3y) [by using equation (1) put a=2x and b=3y]

= (2x+3y)³ - 18xy(2x+3y)

= (12)³ - 18×6×12 [given 2x+3y =12 and xy= 6]

=1728 -1296

= 432

4Thank You

ANSWER

Half(1/2)_1/4+1/6_1/8....................till infinity

Posted by Purva Mittal 7 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

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