CBSE > Class 08 > Mathematics | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

Simplify (x+y) (x square - xy + y square) And Simplify (a+b) ( 2a- 3b+ c)-(2a-3b)c

Posted by Disha .......❤ 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Formula for linear equation in one variable

Posted by Suren Suren 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Simplify (a+b+c)(a+b-c)

Posted by Disha .......❤ 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 7 years, 1 month ago

(a + b + c) (a + b -c)
= a (a +b -c) + b(a +b -c) + c(a +b -c)
= a² + ab - ac + ab + b² - bc + ac + bc - c²
= a² + b² - c² + ab + ab
= a² + b² - c² + 2ab

1Thank You

ANSWER

Whate is the formula to find mp

Posted by Sunita Kumari 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Urmi Sonowal 7 years, 1 month ago

Mp=SP×100÷100-d%

0Thank You

ANSWER

1)3A +25=B2 Solve it ..

Posted by Bijay Kumar Mahapatro 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Shubham Dwivedi 7 years, 1 month ago

A=7 B=6

1Thank You

ANSWER

Plz tell me multiplication tricks

Posted by Kritika Singh 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Keerthana Keeru 7 years, 1 month ago

Learn vedic maths then u will be able to

0Thank You

ANSWER

x-17+200

Posted by Mayank Sharma 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Simplify x(2x – 1) + 5 and find its value at x = -2.

Posted by Vidya Tamminidi 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Pushp Raj 7 years, 1 month ago

2x^2-x+5=(2{-2×(-2)})-2+5 =2×4-2+5 =8+3 =11

1Thank You

Yogita Ingle 7 years, 1 month ago

x (2x - 1) + 5 = (-2) [2(-2) - 1] + 5
= (-2)[-4 - 1]+ 5
= (-2)(-5) + 5
= 10 + 5
= 15

1Thank You

ANSWER

Find the product of 9a, 4ab and -2a.

Posted by Vidya Tamminidi 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Amrit Kaur 7 years, 1 month ago

-72a3b

0Thank You

Yogita Ingle 7 years, 1 month ago

9a × 4ab × (-2a)
= 36a²b × (-2a)
= -72a³b

1Thank You

ANSWER

What is the value of x2 + y2 – 10 at x = 0 and y = 0?

Posted by Vidya Tamminidi 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Amrit Kaur 7 years, 1 month ago

-10

0Thank You

Yogita Ingle 7 years, 1 month ago

x = 0 and y = 0
x² + y² - 10
= (0)² + (0)² - 10
= -10

1Thank You

ANSWER

Find the value of: x^2 – 1/5 at x= -1.

Posted by Vidya Tamminidi 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 7 years, 1 month ago

Put x = -1
x2 - 1/5
= (-1)2 - 1/5
= 1 - 1/5
= (5 - 1)/5
= 4/5

1Thank You

ANSWER

Where are the other chapters in maths like 19, 20 etc.

Posted by Hemander Singh 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Is chapter 9 coming in finalterm cbse class 8

Posted by Shashwat Singh 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Ronit Bhatia 7 years, 1 month ago

0Thank You

ANSWER

What should be subtracted from 5/8 to make it -1

Posted by Deepak Singh 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Anjali Kumari 7 years, 1 month ago

Let the no.subtracted from 5/8 be x. Now, 5/8 -x =-1 -x=-1-5/8 -x=(8-5)/8 -x=3/8 x=-3/8 Hence x=-3/8

1Thank You

ANSWER

Value of 3⁴

Posted by Bhumika Kumari 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Patel Vedant 7 years, 1 month ago

0Thank You

Manik Dogra 7 years, 1 month ago

1Thank You

ANSWER

(2x-3y)square

Posted by Ajmiya Thajudeen Thajudeen 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 7 years, 1 month ago

(a - b)² = a²- 2ab + b²
(2x - 3y)² = (2x)²- 2x(3y) + (3y)²
= 4x² - 6xy + 9y²

0Thank You

ANSWER

-8/15+3/15=3/15+-8/15 is whi h property

Posted by Jwngma Baglary 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Jwngma Baglary 7 years, 1 month ago

Answer

1Thank You

ANSWER

Find side of a cube whose surface area is 600cm^2

Posted by Jasmitha Do Your Best 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Dipesh Negi 7 years, 1 month ago

Yes

0Thank You

Yogita Ingle 7 years, 1 month ago

Surface area of cube = 6a²

6a² = 600
a2= 100
a = 10 cm
Hence side of cube is 10 cm

1Thank You

ANSWER

If 21y5is a multipale of 9,wher y is a digit ,what is the value of y

Posted by Karan Datta Datta Karan Datta 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Dewanshi Gugnani 7 years, 1 month ago

Sum of digits are 2+1+5+y=8+y so y=1

0Thank You

ANSWER

The length, breadth and height of a hall are 3m, 6m and 10m respectively. Find the area of 4 walls

Posted by Sanjay Sanjay 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Pushp Raj 7 years, 1 month ago

Area of Four walls=Lateral surface of cuboid =2h(l+b) =2×10×(6+3) =20×9 180 metre sq.

1Thank You

Ram Kushwah 7 years, 1 month ago

area of four walls

=2 walls on length of floor+2 walls on breadth of floor

=2(length x height)+2x(breadth x height)

=2(6 x 10)+2(3 x 10)

=2x16 +2 x 30

=32+60=92 m^2

1Thank You

ANSWER

35a-cb8=183

Posted by Aryan Ayyagari 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Kiran purchase a radio for fise 5000 including 6%vat find the price of the radio including vat

Posted by Yogesh Rawat 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Ram Kushwah 7 years, 1 month ago

let x be price excluding vat

total price

x+6x/100=5000

106x=5000 x100=500000

x= 500000/106

=4716.98 fise

0Thank You

ANSWER

x=-3 ; x×x+5x. Plzz give the anser

Posted by Sahil Narale 7 years, 1 month ago

CBSE > Class 08 > Mathematics

4 answers

Sahil Sharma 7 years, 1 month ago

-3* -3 +5*-3 6+(-15) 6-15 -9

0Thank You

Yogita Ingle 7 years, 1 month ago

x = -3
x × x + 5x
= (-3)(-3) + 5(-3)
= 9 - 15
= -6

5Thank You

Sahil Narale 7 years, 1 month ago

In mid is multiply. X × X

1Thank You

Kaavya Sethi 7 years, 1 month ago

(-3)×(-3)×(-3)+5×(-3) = -9+(-15) = -24

2Thank You

ANSWER

Is 26 is a perfect square

Posted by Chirag Joshi 3 years, 4 months ago

CBSE > Class 08 > Mathematics

5 answers

Vidhi Gallani 3 years, 4 months ago

No means no

0Thank You

Pushp Raj 7 years, 1 month ago

हाँ, अगर 26 का prime factorisation निकाले तो ans decimal में आएगा। No, क्योंकि decimal में answer आएगा तो वो एक तरह से perfect square नही हैं।

1Thank You

Sahil Narale 7 years, 1 month ago

Soory it is No

1Thank You

Kaavya Sethi 7 years, 1 month ago

0Thank You

Sahil Narale 7 years, 1 month ago

Yes

2Thank You

ANSWER

All formula of maths

Posted by Rajesh Poddar 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

What is the area oftrapizeyam

Posted by Sampat Ushir 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Pushp Raj 7 years, 1 month ago

1/2 × (sum of parallel side)×(height)

4Thank You

Math Legends 7 years, 1 month ago

2 (2 parallel sides) distance between them

2Thank You

ANSWER

Ratan obtain how loan 25000 from State Bank to revolt her hous . If the rate fo increase is 8percentage per annum . What amount will be she have to pay to the bank after 2 years to discharge

Posted by Ishan Iquebal (Faakhir Anjum) 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Ronit Bhatia 7 years, 1 month ago

29160

0Thank You

ANSWER

5*5+5/5-5

Posted by Dushyant Sharma 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Pratyush Raj 7 years, 1 month ago

1Thank You

Dushyant Sharma 7 years, 1 month ago

1Thank You

ANSWER

Probality where

Posted by Soham Khadse 7 years, 1 month ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

Formula of si and ci

Posted by Harikrishna Gupta 7 years, 1 month ago

CBSE > Class 08 > Mathematics

2 answers

Ronit Bhatia 7 years, 1 month ago

Compound interest = P(1+R/100)^time

0Thank You

Stuti Srivastava 7 years, 1 month ago

Formula of si is P x R x T /100

0Thank You

ANSWER

Page 317 of 571

myCBSEguide

myCBSEguide

Test Generator

CUET Mock Tests

Download myCBSEguide App

All Courses

Other Websites

CBSE Courses

Resources

Corporate

NCERT Solutions

CBSE Sample Papers