SOLUTION: factor the polynomial by grouping 4x^3-4x^2-9x+9

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Question 267865: factor the polynomial by grouping
4x^3-4x^2-9x+9
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
factor the polynomial by grouping
4x^3 - 4x^2 - 9x + 9
:
Factor out 4x^2
4x^2(x - 1) - 9x + 9
:
Factor out 9
4x^2(x - 1) - 9(x - 1)
:
Factor out (x-1)
(x - 1) (4x^2 - 9)
:
Note that 4x^2 - 9 is the difference of squares
(x - 1) (2x - 3) (2x + 3)