document.write( "Question 127795: Topic: Simultaneuos equations
\n" ); document.write( "If possible i would like a step by step guide of the answer thanks.\r
\n" ); document.write( "\n" ); document.write( "x+y=9
\n" ); document.write( "x^2-3xy+2y^2=0 \n" ); document.write( "

Algebra.Com's Answer #93607 by Edwin McCravy(20054) $\"\"$ $\"About$

You can put this solution on YOUR website!
If possible i would like a step by step guide of the answer thanks.
\n" ); document.write( "x+y=9
\n" ); document.write( "x^2-3xy+2y^2=0\r
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document.write( "x+y=9\r\n" );
document.write( "x²-3xy+2y²=0\r\n" );
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document.write( "Factor the left side of the second equation:\r\n" );
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document.write( "(x-y)(x-2y)=0\r\n" );
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document.write( "Use the zero-factor principle:\r\n" );
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document.write( "x-y = 0;  x-2y = 0\r\n" );
document.write( "  x = y;     x = 2y\r\n" );
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document.write( "Now you have two systems to solve:\r\n" );
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document.write( "x + y = 9    |   x + y = 9\r\n" );
document.write( "    x = y    |       x = 2y\r\n" );
document.write( "             |\r\n" );
document.write( "y + y = 9    |  2y + y = 9\r\n" );
document.write( "   2y = 9    |      3y = 9\r\n" );
document.write( "    y =     |       y = 3\r\n" );
document.write( "    \r\n" );
document.write( "    x = y    |       x = 2y\r\n" );
document.write( "    x =     |       x = 2(3)\r\n" );
document.write( "             |       x = 6\r\n" );
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document.write( "Two solutions:\r\n" );
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document.write( "(x,y) = (,)\r\n" );
document.write( "(x,y) = (6,3)\r\n" );
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document.write( "Edwin

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