Question

(a+7b)² expand using suitable identities​

Answer 1

Answer:

Hey we have formula

I will say u expand it

(a+b) *2=a*2+b*2+2ab

Answer 2

Answer:

a^2+14ab+49b^2

Step-by-step explanation:

We Have,(a+b)^2=a^2+2ab+b^2

(a+7b)^2=a^2+2(a•7b)+(7b)^2

=a^2+14ab+49b^2