document.write( "Question 446629: Their is a rectangle and its legnth is d-12 and the width is d. If the area is 28 square units, what is the value of d? \n" ); document.write( "
Algebra.Com's Answer #307583 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! There is a rectangle and its length is d-12 and the width is d. If the area is 28 square units, what is the value of d? \n" ); document.write( "---- \n" ); document.write( "Area = length*width \n" ); document.write( "--- \n" ); document.write( "28 = (d-12)d \n" ); document.write( "d^2-12d-28 = 0 \n" ); document.write( "--- \n" ); document.write( "Factor using Inverse FOIL: \n" ); document.write( "d^2-14d+2d-28 = 0 \n" ); document.write( "d(d-14)+2(d-14) = 0 \n" ); document.write( "(d-14)(d+2) = 0 \n" ); document.write( "---- \n" ); document.write( "Positive solution: \n" ); document.write( "width = d = 14 \n" ); document.write( "length = d-12 = 2 \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |