Andrew factored the expression28x^2-42x^2+35x as 7x(4x^2+6x-5) . But when Melissa applied the distributive law and multiplied out7x(4x^2+6x-5) , she got28x^3+24x^2-23x ; thus, Andrew’s 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. If the expression is prime, so state

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anonymous · Answer

adrew he factor out the his expression 7x is the common factor so he must have4x in the brackets not 4x^2