Question

What equation results from completing the square and then factoring x2+4x=12

Answer 1

x^2 + 4x = 12

add 4 to each side (4/2)^2

x^2 + 4x + 4 = 12 + 4

(x+2)^2 = 16

take the square root of each side (gives a positive and negative answer)

x+2 = 4 x+2 = -4

x=2 x=-6