Thread: quadratic equation problem

Could someone please show me where I went wrong on this:

2x^2+2x-12=0
2x^2 +6x-4x-12=0
x(2x+6)(-4x-12)=0
2x+6=0,2x=-6,
2x/2=-6/2,x=-3

-4x=12,-4x/4=12/4
x=3

Originally Posted by wolfhound

Could someone please show me where I went wrong on this:

2x^2+2x-12=0
2x^2 +6x-4x-12=0
x(2x+6)(-4x-12)=0 <<<<<<<<< here
2x+6=0,2x=-6,
2x/2=-6/2,x=-3

-4x=12,-4x/4=12/4
x=3

I take this line:



I'll leave the rest for you

Originally Posted by earboth

I take this line:



I'll leave the rest for you

x=-3 and x=2
Thanks