Question

What number must you add to complete the square?

X^2 + 8x= 11
A. 12
B. 16
c. 8
D. 4​

Answer 1

16

Explanation:

X^2 + 8x= 11

Take the coefficient of x

8

Divide by 2

8/2 =4

Square it

4^2 = 16

Add 16 to each side