SOLUTION: Hello! I need assistance with factoring this problem. x^4+7x^2-3x^3-21x. Thank you so much!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello! I need assistance with factoring this problem. x^4+7x^2-3x^3-21x. Thank you so much!      Log On


   

Question 112429: Hello! I need assistance with factoring this problem. x^4+7x^2-3x^3-21x. Thank you so much!
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
x^4+7x^2-3x^3-21x
x^2(x^2+7)-3x(x^2+7)
(x^2-3x)(x^2+7)
x(x-3)(x^2+7)