Verified Answer :

metchelle

In order to get the volume of a rectangular prism, the formula would be lxwxh. The volume given above is  x3 + 4x2 + 3x. In this case, 
x(x^2 + 4x + 3) = lwh

x ( x + 3) (x + 1) = lw*h
Based on the dimensions, the longest edge of the prism would be x + 3. The correct answer is the second option. Hope this answer helps. 

Iilyevans

Answer:

the answer is x + 3

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