Answer:
see below
Step-by-step explanation:
x^2 + 8x + _ = _
To complete the square, take the coefficient of the x term
8
Divide by 2
8/2 =4
Square it
4^2 =16
Add this to both sides
x^2 + 8x + 16_ = 16_
Now the left side factors into (x+ 8/2)^2
(x+4)^2 = 16
