Homework Help: Algebra

Posted by Anonymous* on Thursday, August 2, 2012 at 8:48am.

Can someone help me with this please.
Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x)she got 20x^3-48x^3+32x thus Andrews solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your answer reasoning and correctly factor the original expression if possible. If the expression is prime so state.

Algebra - Steve, Thursday, August 2, 2012 at 9:57am
Andrew divided only the first term by 4x.

Should have been

4x(5x^2 - 3x + 2)

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