Question

4. Evaluate using identity:
(i) (a + 4) (a - 4)​

Answer 1

Step-by-step explanation:

using (a+b)(a-b)=a^2 -b^2

(a+4)(a-4)=a^2-4^2

..

crosscheck

(a+4)(a-4)

= a^2 +4a -4a -16

=a^2 -16

Answer 2

please mark me as brainliest answer