Question

7a to the 2 power - a to the 2 power + 16 = what

Answer 1

48a^2 + 16

Explanation:

7a to the 2 power - a to the 2 power + 16 = (7a)^2 - a^2 + 16.

This latter result can be rewritten as 49a^2 - a^2 + 16, or 48a^2 + 16