document.write( "Question 353837: Solve a) x^2+7x-10=0\r
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\n" ); document.write( "\n" ); document.write( "b)find the x intercepts of f(x)=x^2+7x-10\r
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\n" ); document.write( "\n" ); document.write( "type exact answers using radicals as needed. rationalize all denonminators. \n" ); document.write( "

Algebra.Com's Answer #252940 by Edwin McCravy(20054) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Solve a) x^2+7x-10=0\r\n" );
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document.write( "Write\r\n" );
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document.write( "as\r\n" );
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document.write( "and compare it to\r\n" );
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document.write( "and notice that , , and \r\n" );
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document.write( "Then substitute in the quadratic formula\r\n" );
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document.write( "and get\r\n" );
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document.write( "Then simplify:\r\n" );
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document.write( "which is really two answers:\r\n" );
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document.write( " and \r\n" );
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document.write( "b)find the x intercepts of f(x)=x^2+7x-10\r\n" );
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document.write( " They are the points:\r\n" );
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document.write( "They are the points marked P and Q below on the graph of  \r\n" );
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document.write( "If you get the decimal approximations with a calculator,\r\n" );
document.write( "you'll find that P is approximately the point P(-8.2,0) and\r\n" );
document.write( "Q is approximately the point Q(1.2,0)\r\n" );
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document.write( "Edwin

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