-7
x2-5x-36 = (x-9(x+4) when factored
x2+7x-18 = (x+9)(x-2) when factored
x2-7x-18 = (x-9)(x+2) when factored
(x + 3)(x - 3)
x - 3
Yes and it is: (x-3)(x+3)
x2-6x-27 = (x+3)(x-9) when factored
x2-18x+81 = (x-9)(x-9) when factored
When factored it is: (x+9)(x-1)
74
x2+2x-63 = (x-7)(x+9) when factored
When factored it is: (x-9)(x+4)