Question

Please help me with this!

Answer 1

A perfect square is any number that can be multiplied by its self evenly 4x4 = 16. The answer is D.

Answer 2

To form a perfect square, we need to add (b/2)² to the equation.

x² + 16x ⇒ b = 16

$\bigg( \dfrac{b}{2} \bigg)^2 = \bigg( \dfrac{16}{2} \bigg)^2 = \bigg(8 \bigg)^2= 64$

We need to add 64 to the equation.

x² + 16x + 64 = (x+ 8)²

Answer: We need to add 64 to the equation.