document.write( "Question 22803: We're rationalizing the demoninator. I'm having difficulty solving this:\r
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document.write( "4
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document.write( "The Cube root of 3.\r
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document.write( "Help? \n" );
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Algebra.Com's Answer #11223 by rapaljer(4671)![]() ![]() You can put this solution on YOUR website! Before beginning ANY cube root problem, be sure that you know your perfect cubes. That is, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now, \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The idea is to somehow get the number in that radical in the denominator up to a perfect cube. When you think of the 3 inside the cube root sign, what perfect cube comes to mind associated with 3? The answer should be 27.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You need to get that denominator from 3 up to 27, by multiplying it by 9. In other words you must multiply the numerator and denominator by the cube root of 9.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply numerator times numerator and denominator times denominator: \n" ); document.write( "= \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "R^2 at SCC\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |