Home
Class 8
MATHS
Incorrect:(2a+3b)(a-b)=2a^2+ab-3b^2 Corr...

Incorrect:`(2a+3b)(a-b)=2a^2+ab-3b^2`
Correct:`(2a+3b)(a-b)=2a^2+3ab-2ab-3b^2=2a^2+ab-3b^2`.

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

(2a + 3b) (a – b) = 2a^2 – 3b^2

Verify (a+b)^2 = a^2 +2ab+b^2 for a =3,b=-3.

Verify (a+b)^2 = a^2 +2ab+b^2 for a = 3,b=2.

Verify: (a-b)^2=a^2-2ab+b^2 for a = 3,b=2 and a=3 ,b= -2.

Show that : (a+b)^2 - 4ab=(a-b)^2 .

Verify (a+b)^2 = a^2 +2ab+b^2 for a = 3 ,b=0

Prove that the angle between the st. lines : (a + b)x + (a-b)y = 2ab and (a-b)x+(a+ b) y = 2ab is tan^-1 frac(2ab)(a^2-b^2) .

Subtract: 5a^2 – 7ab + 5b^2 from 3ab – 2a^2 – 2b^2

Prove that: {:|(1+a^2-b^2,2ab,-2b),(2ab,1-a^2+b^2,2a),(2b,-2a,1-a^2-b^2)|