SOLUTION: How do you factor completely 5x^4-35x^4-90x^2

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Question 277759: How do you factor completely 5x^4-35x^4-90x^2
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
I assume you really mean
5x^4-35x^3-90x^2
first factor out 5x^2
5x^2*(x^2-7x-18)
5x^2*(x-9)*(x+2)