Question

PLEASE HELP. NO LINKS. NEED REAL EXPLANATION.

Answer 1

Explanation:

This is very easy watch

x^2-16x+ __

what do we do to find the blank?

We divide 16 by 2 to get 8

then we take the square of 8

which is 64

so this would be x^2-16x+ 64 = 64

REMEMBER 64 goes to BOTH sides of equation