Question 1065147
Here you go, step by step.
First we are going to group our terms:
x^3+5x^2-5x-25 = (x^3+5x^2)+(-25-5x) = x^2(x+5)-5(x+5)
Now factor x+5 from x^2(x+5)-5(x+5) and we get:
(x+5)(x^2-5)
:
Happy learning,
John