SOLUTION: Solve equation given the two indicated roots. X^4-3x^3-8x^2+12x+16=0

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Question 442259: Solve equation given the two indicated roots.
X^4-3x^3-8x^2+12x+16=0
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
Might it help to know what the two indicated roots are? If you know what the two roots are you can synthetically/long divide by each factor. Say the roots are 2 and 8, then you could divide by (x-2) and (x-8) and then solve the quadratic for the other 2 roots.