Question 668702
6x^2-x -35

First, see if this is easily factorable. 

Find two numbers such that they multiply to 6*-35 = -210, but add up to -1. After thinking about this you get -15 and 14.

So rewrite -x as -15x + 14x.

6x^2 -15x +14x-35

Group each pair and factor pairwise.

(6x^2-15x) + (14x-35)

{{{3x(2x-5) + 7(2x-5) = highlight((3x+7)(2x-5))}}}