Question

How do you multiply `(b-7)^2`?

Answer 1

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

Explanation:

`(a-b)^2=a^2-2ab+b^2`
same concept
`(b-7)^2=b^2-2*b*7+7^2`
`=b^2-14b+49`