factor completely
x^2 + 13x + 36
x^2 - 2x - 35
x^2 + 5x - 6
3x^2 - 14x + 15
x^2 + 13x + 36 = (x + 4)(x + 9)
x^2 - 2x - 35 = (x - 7)(x + 5)
x^2 + 5x - 6 = (x + 6)(x - 1)
3x^2 - 14x + 15 = (3x - 5)(x - 3)
x^2 + 13x + 36
x^2 - 2x - 35
x^2 + 5x - 6
3x^2 - 14x + 15
x^2 - 2x - 35 = (x - 7)(x + 5)
x^2 + 5x - 6 = (x + 6)(x - 1)
3x^2 - 14x + 15 = (3x - 5)(x - 3)