(x + 5)(x - 8)
It is (x - 9)*(x + 4)
X3 - 4X2 - 45XX(X2 - 4X - 45)=============X is only common factor here.
(x - 7)(x + 2)
The factors of that trinomial are (x - 13) and (x + 3) . Neither of them appears below.
(x + 5)(x - 8)
-(x + 13)(x - 2)
2x^2
-x2 + 2x + 48 = (-x - 6)(x - 8)
It is (x - 9)*(x + 4)
-x2 + 2x + 48 = (x +6)(8 - x)
-x2 + 2x + 48 = (-x - 6)(x - 8)
Do you mean x2+11x-26 if so then it is (x-2)(x+13) when factored
It is: (x2 + 5x) (x + 8)
x2+12x+28Improved Answer:--x2+12x+28 = (-x+14)(x+2) when factored
x2 + 12x2 + 35 = 13x2 + 35 which cannot be factorised in any sensible way.
Divide all terms by -1 so: x2-11x-26 = (x+2)(x-13) when factored