The equation 4x2 + 8x + 15 = 0 is being rewritten in vertex form.

Question

Fill in the missing step.

Given 4x2 + 8x + 15 = 0
Step 1 4(x2 + 2x ___) + 15 ___ = 0
Step 2 ✔
Step 3 4(x + 1)2 + 11 = 0
4(x2 + 2x + 1) + 15 − 4 = 0
4(x2 + 2x + 1) + 15 − 1 = 0
4(x2 + 2x + 2) + 15 − 2 = 0
4(x2 + 2x + 4) + 15 − 4 = 0

Answer 1

Step 3 4(x + 1)2 + 11 = 0