Question

what number should be added to both sides of the equation to complete the square?
$x^2 + 8x = 4$
8
4
16
32

Explanation:

Step1: Identify x coefficient

The coefficient of $x$ is $8$.

Step2: Half the coefficient

$\frac{8}{2} = 4$

Step3: Square the result

$4^2 = 16$

Answer:

16