Question

I need help ASAP due in an hour

only the highlighted ones plz:)​

Answer 1

15.

a) 9

b) (x + 3)(x + 3) or (x + 3) ^ 2

16.

a) 121

b) (x + 11)(x + 11) or (x + 11) ^ 2

17.

a) 81

b) (x + 9)(x + 9) or (x + 9) ^ 2