Question

Which of the following are solutions to the equation below?

Check all that apply
x2 + 4x + 4 = 12

Answer 1

C. 2√3 - 2

Explanation:

`x^2 + 4x + 4 = 12\\\\x^2+2\cdot x\cdot2+2^2=12\\\\(x+2)^2=12\\\\x+2=-√(12)\quad\vee\quad x+2=√(12)\\\\x=-2√(3)-2\quad\vee\quad x=2\sqrt3-2`