Question: When directed to completely factor the polynomial 4x 2 y 5 - 8xy 3 , a student wrote 2xy 3 (2xy 2 - 4).When the

When directed to completely factor the polynomial 4x2y5- 8xy3, a student wrote 2xy3(2xy2- 4).When the professor did not give the student full credit, he complained because when his answer is multiplied out, the result is the original polynomial.

Discuss why did the student not receive full credit and give the correct answer.

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