document.write( "Question 407997: How do you find two whole numbers with a sum of 15 and a product of 54 \n" ); document.write( "
Algebra.Com's Answer #287471 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( " find two whole numbers with a sum of 15 and a product of 54\r
\n" ); document.write( "\n" ); document.write( "let numbers be \"x\" and \"y\"\r
\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "a sum of\"x\" and \"y\" is \"15\"...\r
\n" ); document.write( "\n" ); document.write( "so, we have \"x%2By=15\"..........1\r
\n" ); document.write( "\n" ); document.write( "a product of \"x\" and \"y\" is \"54\"\r
\n" ); document.write( "\n" ); document.write( "so, we have \"xy=54\"..........2\r
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\n" ); document.write( "\n" ); document.write( "solve the system:\r
\n" ); document.write( "\n" ); document.write( "\"x%2By=15\"..........1\r
\n" ); document.write( "\n" ); document.write( "\"xy=54\"..........2
\n" ); document.write( "-----------------------------\r
\n" ); document.write( "\n" ); document.write( "\"x%2By=15\"..........1.solve for \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"x=15-y\"..........1..substitute in 2\r
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\n" ); document.write( "\n" ); document.write( "\"%2815-y%29y=54\"..........2...solve for \"y\"\r
\n" ); document.write( "\n" ); document.write( "\"15y-y%5E2=54\"\r
\n" ); document.write( "\n" ); document.write( "\"y%5E2-15y%2B54=0\"........\r
\n" ); document.write( "\n" ); document.write( "\"y+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+%28-%28-15%29+%2B-+sqrt%28+%28-15%29%5E2-4%2A1%2A54+%29%29%2F%282%2A1%29+\"\r
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\n" ); document.write( "\n" ); document.write( "\"y+=+%2815+%2B-+sqrt%28225-216%29%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+%2815+%2B-+sqrt%289%29%29%2F2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"y+=+%2815+%2B-+3%29%2F2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"y1+=+%2815+%2B3%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"y1+=+%2818%29%2F2+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y1+=+9+\"\r
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\n" ); document.write( "\n" ); document.write( "\"y2+=+%2815+-3%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"y2+=+%2812%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"y2+=+6\"\r
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\n" ); document.write( "\n" ); document.write( "so, we have two solutions for \"y\", and now we will find two solutions for \"x\"\r
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\n" ); document.write( "\n" ); document.write( "\"x1=15-y\"...plug in \"y1\"\r
\n" ); document.write( "\n" ); document.write( "\"x1=15-9\"\r
\n" ); document.write( "\n" ); document.write( "\"x1=6\"\r
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\n" ); document.write( "\n" ); document.write( "\"x2=15-y\"...plug in \"y2\"\r
\n" ); document.write( "\n" ); document.write( "\"x2=15-6\"\r
\n" ); document.write( "\n" ); document.write( "\"x2=9\"\r
\n" ); document.write( "\n" ); document.write( "the numbers \"x\" and \"y\" are \"x=6\" and \"y=9\" or \"x=9\" and \"y=6\"\r
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