Question

Solve the equation by completing the square?
12x= -2x² + 8

A. x= -3 + √13, -3, - √13
B. x= 3 + √13, 3 -√13
C. x= 2,4
D. x= -2,-4

Answer 1

Learn here;
http://www.youtube.com/watch?v=gzm-uhj06q8

Answer 2

\[2x ^{2}+12x-8=2(x+3)^2-26=0 => (x+3)^2=13 => x=-3+\sqrt{13} , x=-3-\sqrt{13}\]

Answer 3

So B?