Hi,

Note: V(rectangular solid) = l*w*h

The volume of a refrigerator is x^3-3x^2-16x-12, height = (x+2)

(x^3-3x^2-16x-12)/(x+2)= x^2 - 5x - 6 = (x-6)(x+1)

Using Synthetic Division: 

-2	1	-3	-16	-12

		2	10	12

	1	-5	-6	0

V = (x+2)(x-6)x+1)

The other two dimensions are: (x-6)and (x+1) 

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