document.write( "Question 387915: What two positive integers multiplied together gives me 1440, and added together gives me 13?
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Algebra.Com's Answer #274218 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! What two numbers multiplied together give me 1440, \n" ); document.write( "and added together give me 13? \n" ); document.write( "---------------- \n" ); document.write( "Equations: \n" ); document.write( "xy = 1440 \n" ); document.write( "x+y = 13 \n" ); document.write( "----- \n" ); document.write( "y = 13-x \n" ); document.write( "--- \n" ); document.write( "Substitute for \"y\" and solve for \"x\": \n" ); document.write( "x(13-x)-1440 = 0 \n" ); document.write( "-x^2+13x-1440 = 0 \n" ); document.write( "----- \n" ); document.write( "x^2-13x+1440 = 0 \n" ); document.write( "----- \n" ); document.write( "No Real Number solution. \n" ); document.write( "---- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |