Question

Using identities find the product (8a -11b)2

Answer 1

Answer:

(a−8)(a+2)

This is in the form.

(x+a)(x+b)=x

2

+(a+b)x+ab

Here x=a,a=−8,b=2

(a−8)(a+2)=a

2

+(−8+2)a+(−8)(2)

=a

2

+(−6)a−16

=a

2

−6a−16

Step-by-step explanation:

hope it helps you!!

Answer 2

Answer:

(8a-11b)2

According to the identity (a + b)2=a2+2ab+b2 we have to expand the given expression,

(8a-11b)2= (8a)2+2 (8a)(11b)-(11b)2

(8a+3b)2= 64a2+88ab-11b2