Question

Use identity and solve the followings:- (b-7)²

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

(a-b)^2=a^2+b^2-2ab

So,

(b-7)^2=b^2+49-2(b)(7)

(b-7)^2=B^2-14b+49

Side note:

The question's pretty incomplete, this felt like the most probable answer you were hoping to get. Anyways hope it helps!