SOLUTION: A bit of help, please? It's {{{x^3-2x^2-4x+8}}}. Thank you!

Algebra ->  Expressions -> SOLUTION: A bit of help, please? It's {{{x^3-2x^2-4x+8}}}. Thank you!      Log On


   

Question 8439: A bit of help, please? It's x%5E3-2x%5E2-4x%2B8. Thank you!
Found 2 solutions by Earlsdon, khwang:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
I could help if I only knew what you wanted to do with this expression.
Perhaps you wish to factor it? Let's assume that this is the case.
Factor: x%5E3-2x%5E2-4x%2B8 = %28x%2B2%29%28x%5E2-4x%2B4%29 = %28x%2B2%29%28x-2%29%28x-2%29

Answer by khwang(438) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E3-2x%5E2-4x%2B8
= (x^3-2x^2) - 4x + 8
= x^2(x-2) - 4(x-2)
= (x-2)(x^2 - 4)
= (x-2)(x-2)(x+2)
= (x-2)^2(x+2)
Kenny