# Math Help - Easy quadratic

1. ## Easy quadratic

My friend says $-x^2-x+6 = (-x+2)(x+3)$ But I said its $-x^2-x+6 = (x+2)(x-3)$ Which one of us is right?

2. Originally Posted by nerdzor
My friend says $-x^2-x+6 = (-x+2)(x+3)$ But I said its $-x^2-x+6 = (x+2)(x-3)$ Which one of us is right?
Your friend is correct.

$- x^2 - x + 6 = - (x^2 + x - 6) = - (x + 3)(x - 2)$ or $(x + 3)(2 - x)$ or $(-x-3)(x - 2)$

3. you could have expanded both to see which was correct. note that in your form you had two positive x's. this means that when we multiply them, they will yield a positive x^2, which is not what you want. one must be positive and the other negative...