SOLUTION: solve: c^3 + c^2 - 7c - 3 = 0, given root -3

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Question 35811: solve: c^3 + c^2 - 7c - 3 = 0, given root -3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
c^3 + c^2 - 7c - 3 = 0, given root -3
Use synthetic division with x=-3 or use
long division by x+3.
The quotient is x^2-2x-1
which has roots
x=[2+sqrt(4+4)]/2 = [1+sqrt2]
or
x=[2-sqrt(4+4)]/2 = [1-sqrt2]
Cheers,
Stan H.