document.write( "Question 1032577: The area of a rectangular serving tray is given by the trinomial 3x2+17x−56. The tray's width is 3x−7. What is the length of the tray? \n" ); document.write( "
Algebra.Com's Answer #647248 by fractalier(6550)\"\" \"About 
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We can either long divide one by the other or merely factor
\n" ); document.write( "3x^2 + 17x - 56 = (3x - 7)(x + 8)
\n" ); document.write( "so that the length must be x + 8.
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