Question

2x^2+5x-7
Factor

Answer 1

Where are you having trouble?

Answer 2

I dont know how to factor with a number in front of the x^2

Answer 3

First, figure out what the multiples of -7 are. 7 and 1, where one is negative, right? Then figure out what the multiples of 2 (the coefficient of x^2) are. 2 and 1, right? So, we know that the factored form must be either:\[(2x ± 7)(x±1)\] or\[(2x±1)(x±7)\]

Answer 4

Wow that was supposed to be ±

Answer 5

Er, a plus/minus sign.

Answer 6

But anyways, you just figure out which of those four possibilities gives you a value of 5x when expanded.

Answer 7

(2x+7)(x-1)