document.write( "Question 459906: Solve equation (u-3)(u+5)=-12 \n" ); document.write( "
Algebra.Com's Answer #315476 by Edwin McCravy(20065)\"\" \"About 
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document.write( "   (u - 3)(u + 5) = -12\r\n" );
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document.write( "The left side is factored, but it doesn't help\r\n" );
document.write( "us because we don't have 0 on the right side.  So\r\n" );
document.write( "we must \"un-factor\" the left side, get 0 on the \r\n" );
document.write( "right side, then \"re-factor\" the new left side:\r\n" );
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document.write( "   (u - 3)(u + 5) = -12\r\n" );
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document.write( "u² + 5u - 3u - 15 = -12\r\n" );
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document.write( "     u° + 2u - 15 = -12\r\n" );
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document.write( "      u² + 2u - 3 = 0 \r\n" );
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document.write( "   (u + 3)(u - 1) = 0\r\n" );
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document.write( "u + 3 =  0   u - 1 = 0\r\n" );
document.write( "    u = -3       u = 1\r\n" );
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