SOLUTION: Factor by grouping: 3x3 + 15x2 - 4x – 20.

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Question 208167: Factor by grouping: 3x3 + 15x2 - 4x – 20.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Factor by grouping: 3x^3 + 15x^2 - 4x – 20.
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= 3x^2(x+5) - 4(x+5)
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= (x+5)(3x^2-4)
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Cheers,
Stan H.