The volume of a rectangular prism is represented by the function x3 + 11x2 + 20x – 32. The width of the box is x – 1 while the height is x + 8. Find the expression representing the length of the box

Question

mertsj · Answer

Do you know synthetic division?

anonymous · Answer

no I just know we did basically by long division. which is (division, multiplication,subtraction,bring down the next number or term, and repeat.)

mertsj · Answer

Ok.  Then divide the volume by x-1 and then divide that answer by x+8 and that will be the length.
Or you could multiply (x-1)(x+8) and then divide the volume by that answer.

anonymous · Answer

Do you use the foil method to multiply (x-1)(x+8)

mertsj · Answer

yes

mertsj · Answer

x^2+7x-8

anonymous · Answer

what would the volume be to divide that answer by?

mertsj · Answer

What does the problem say the volume is?

anonymous · Answer

is says that it is represented by this function x3 + 11x2 + 20x – 32

mertsj · Answer

You have now answered your own question.

anonymous · Answer

I came up with the answers x – 6
x – 4
x + 4
x + 6
but I don't know which it is from here.

mertsj · Answer

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