Question

find t he following square by using identities. 1)(b_7)^2​

Answer 1

Step-by-step explanation:

using indentity (p-q)^2=p^2+q^2+2pq

here p=b and q=7

then

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

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