Homework Help: math

Posted by kev on Wednesday, March 10, 2010 at 10:38pm.

The volume of a rectangular prism is 2x^3+5x^2+x-2. The height of the prism is 2x-1, and the length of the prism is x+2. Find the width of the prism.

math - Reiny, Thursday, March 11, 2010 at 12:12am
w(2x-1)(x+2) = 2x^2 + 5x^2 + x - 2
w(2x-1)(x+2) = (2x-1)(x+2)(x+1)
w = x+1

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