Need help factoring 7x^2 + 7x -20
I hope you realize that not every quadratic trinomial will factor.
This one does not factor
(7)(-20) = -140
there are no pair of factors for -140 which have a sum of 7
or
for a quadratic trinomial to factor, the discriminant must be a perfect square.
b^2 - 4ac = 49 - 4(7)(-20) = 609 which is not a perfect square