Question

completing the square
x^2+7x+12=0

Answer 1

Do you really have to complete the square?

Answer 2

if you want

Answer 3

It can be solved with out completing the square

Answer 4

x^2 + 7x + 12
x^2 + 3x + 4x + 12
x(x+3)+4(x+3)
(x+3)(x+4)

That's without completing the square

Answer 5

with completing the square

Answer 6

x^2-2*(7/2)x+(7/2)^2+12=(7/2)^2
(x+7/2)^2=49/4-12
(x+7/2)^2=1/4
x+7/2=+-1/2
x=-7/2-1/2; x=-7/2+1/2
x=-4;x=-3;

Answer 7

Completing the square is retarded