SOLUTION: Factor completely: x^3-5x^2-4x+20

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Factor completely: x^3-5x^2-4x+20       Log On


   

Question 389922: Factor completely: x^3-5x^2-4x+20
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
grouping ___ (x^3 - 5x^2) + (-4x + 20)

factoring ___ [x^2(x - 5)] + [-4(x - 5)]

consolidating ___ (x - 5)(x^2 - 4)

factoring (difference of squares) ___ (x - 5)(x + 2)(x - 2)