document.write( "Question 449279: how do you solve $\"-12%2Fsqrt%2818x%29\"$ ? I have gotten to $\"-12sqrt%28+2%2A9%2Ax+%29%2F%2818x%29\"$ but am unsure of what to do with the numbers under the radicand \n" ); document.write( "

Algebra.Com's Answer #309078 by Edwin McCravy(20055) $\"\"$ $\"About$

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$\"-12%2Fsqrt%2818x%29\"$
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document.write( "Don't start out multiplying by the entire denominator over itself.\r\n" );
document.write( "Instead, first get the prime factorization of 18 as 2*3²\r\n" );
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document.write( "To get a perfect square under the radical,\r\n" );
document.write( "we need to multiply what's under there by another 2 and also\r\n" );
document.write( "by another x, so we multiply by  which is just 1 in value.\r\n" );
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document.write( "Multiplying under the radicals in the denominator:\r\n" );
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document.write( "Now we will no longer have a radical in the\r\n" );
document.write( "denominator because we can take the square roots\r\n" );
document.write( "of all those squares\r\n" );
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document.write( "Then the 6 divides into the 12 and we have:\r\n" );
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document.write( "Edwin

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