Question

Solve x2 + 4x – 12 = 0 by completing the square.

Answer 1

x2 + 4x – 12 = 0
(x-2)^2-4-12=0
(x-2)^2-16=0
(x-2)^2=16
can you go on ?

Answer 2

would x be 2, -6

Answer 3

no
try it again!

Answer 4

(x-2)^2=16
(x-2)=+-4

Answer 5

x-2=4
x-2=-4

Answer 6

x+2=±4 ?

Answer 7

ok
x-2=4 x=6
x-2=-4 x=-2