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September 19, 2014

Homework Help: Algebra

Posted by Natalie on Monday, July 25, 2011 at 1:50pm.

Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^2+6x-5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x-5) , she got 28x^3+42x^2-35x ; thus, Andrews solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your reasoning and correctly factor the original expression, if possible.

Can someone please help me with this question.

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