Question

( b-7)² plz answer the question...​

Answer 1

Answer:

(b-7)²=b²-14b+49

Step-by-step explanation:

(b-7)²

Using the identity:-(a-b)²=a²-2ab+b²

a=b, b=7

=(b)²-2(b)(7)+(7)²

=b²-14b+49

Answer 2

Answer:

By using (a-b)²=a²-2ab+b²

b²-14b+49