Question

Find the solution set of
4^2 + 7x - 2

So far I have (4x^2 - 1x) (8x - 2) = 0

This is where I'm stuck. I have to pull 1x from the first set of parenthesis?

Answer 1

Or -1x?
Not sure what to do next.

Answer 2

x(4x-1) 2(4x-1)

(4x-1) (x+2)

4x-1=0
4x=1
x=1/4

x+2=0
x=-2

Answer 3

{1/4, -2}