Question

Solve –3x^2 – 4x – 4 = 0

Answer 1

-3x^2-6x+2x-4 =-3x (x-2)+2 (x-2) =(-3x+2)(x-2) -3x+2=0 X=2/3 X-2=0 X=2 Hope it helps! !!!!

Answer 2

3x^2 – 4x – 4 = 0



multiply the first coefficient by the last coefficient:

3 x -4= -12

Now think, what adds to the 2nd coefficient (-4) and multiplies to -12?

-6 and 2

rewrite your equation:

3x^2 - 6x + 2x - 4 <==== this is essentially the same equation


now split it...

3x^2 - 6x

AND

2x -4

factor each one so that both share a common factor:

3x(x-2)

AND

2(x-2)

Now combine them:

(3x+2)(x-2)