The equation of the volume of a rectangular prism in cubic units, is shown below.V(x)=x^3+2x^2-5x-6.

Algebra
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Continuation ... The height of the prism is x+1 units. Which expression in units could represent the length of this prism?

A   x-2 because V(2)=0

B  x-3 because V(-3)=0

C  x+2 because V(-2)=4

D   x-6 because V(0)=-6 

Sep 29th, 2015

Thank you for the opportunity to help you with your question!

Thank you for the opportunity to help you with your question!

x-2 because V(2)=0

Please let me know if you need any clarification for the doubts. I'm always happy to answer your questions. Looking forward to help you again. thank you. :) Please let me know if you need any clarification for the doubts. I'm always happy to answer your questions. Looking forward to help you again. thank you. :)
Sep 29th, 2015

Can i get clarification?

Sep 29th, 2015

the length of the prism should be a factor of the given equation, so we see that for x= 2, the equation yields 0, so (x-2) is a factor of the equation. and hence it can be said that it can represent the length of the prism.

Sep 29th, 2015

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