SOLUTION: I need help with COMPLETELY factoring out the polynomial 3x3-12x

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Question 232846: I need help with COMPLETELY factoring out the polynomial 3x3-12x
Answer by eggsarecool(46) About Me  (Show Source):
You can put this solution on YOUR website!
I need help with COMPLETELY factoring out the polynomial 3x%5E3-12x
Ok first step would be to factor out 3x which leaves us with
3x%28x%5E2-4%29 Now we can use the differance of squares formula which says that a%5E2-b%5E2=%28a-b%29%28a%2Bb%29
For us a=x and b=-2
This gives us 3x%28x%5E2-4%29=3x%28x%2B2%29%28x-2%29 we factored the x%5E2-4 using difference of squares.