document.write( "Question 1143777: one dimension of a cube is increased by 1 inch to form a rectangular bloc.Suppose that the volume of the new block is 150 cubic inches.Find the length of an edge of the original cube
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Algebra.Com's Answer #764684 by ikleyn(52866) $\"\"$ $\"About$

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document.write( "(x+1)*x*x = 150.\r\n" );
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document.write( "One solution is x= 5.\r\n" );
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document.write( "The function f(x) = x^3 + x^2 is monotonic, so there is NO other solution.\r\n" );
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document.write( "ANSWER.  The single and the unique solution to the problem is THIS : the length of the original cube is 5 inches.\r\n" );
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