Question 117062
5x^2-13x-6
5*-6=-30 Multiply the 1st and last coefficients.
What factors of -30 when added equal -13? Ans.: -15 & 2
The rest is easy.
5x^2-15x+2x-6
5x(x-3)+2(x-3) Factor by grouping.
(5x+2)(x-3)
.
Ed