document.write( "Question 511746: the sum of two numbers is 16 and the product is 63. what is the two numbers? \n" ); document.write( "
Algebra.Com's Answer #342384 by Maths68(1474)\"\" \"About 
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Let numbers are x and y
\n" ); document.write( "x+y=16........(1)
\n" ); document.write( "xy=63
\n" ); document.write( "x=63y.........(2)
\n" ); document.write( "Put the value of x in (1)
\n" ); document.write( "63/y+y=16
\n" ); document.write( "Multiply by y both sides
\n" ); document.write( "63+y^2=16y
\n" ); document.write( "Rearrage above equation
\n" ); document.write( "y^2-16y+63=0
\n" ); document.write( "y^2-9y-7y+63=0
\n" ); document.write( "y(y-9)-7(y-9)=0
\n" ); document.write( "(y-7)(y-9)=0
\n" ); document.write( "y-7=0 or y-9=o
\n" ); document.write( "y=7 or y=9
\n" ); document.write( "Put the values of y in (1)
\n" ); document.write( "x=7
\n" ); document.write( "x+y=16
\n" ); document.write( "x+7=16
\n" ); document.write( "x=16-7
\n" ); document.write( "x=9
\n" ); document.write( "x+9=16
\n" ); document.write( "x=16-9
\n" ); document.write( "x=7\r
\n" ); document.write( "\n" ); document.write( "if one number is 7 other will be 9 or one is 9 other will be 7.\r
\n" ); document.write( "\n" ); document.write( "So numbers are 7 and 9
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