document.write( "Question 1121353: what two numbers added equal -7 and multiplied equal -8 \n" ); document.write( "

Algebra.Com's Answer #737211 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "The standard solution is THIS:\r\n" );
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document.write( "x + y = -7     (1)\r\n" );
document.write( "xy    = -8     (2)\r\n" );
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document.write( "From eq(1) express y = -7-x  and substitute it into eq(2). You will get\r\n" );
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document.write( "x*(-7-x) = 8\r\n" );
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document.write( "x*(7+x) = 8\r\n" );
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document.write( "x^2 + 7x - 8 = 0\r\n" );
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document.write( " =  = .\r\n" );
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document.write( "Answer.  The numbers are   = 1 and   = -8.\r\n" );
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