posted by PLEASE HELP .
Solve by using the quadratic formula
First, put all the terms on one side.
x^2 + 7x -12 = 0
If the original sign for the 12 were negative, this would lead you to:
x^2 + 7x + 12 = 0
This could factor into:
(x+3)(x+4) = 0
However, as you have formula posted, it cannot be factored.
I hope this helps. Thanks for asking.