document.write( "Question 89271: Please help. I'm really confused --I'm trying to simplify these radicals, but I'm lost as to what steps to take. My instructor gives a different method then I learned (I din't even have that down. We have a test and I don't think I'll pass this section unless I get some help.\r
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document.write( "I'm not sure how to key the radical sign on my computor keyboard. Here's a few of the problems (sorry there's more than one, but I need to know the formulas, because I notice that not all problems can be solved just the same way, so here's one of every kind of problem I'm simplifying:\r
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document.write( "The square root of 27x^3y^5\r
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document.write( "The cubed root 125x^9y^5/8x^3z^12\r
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document.write( "1/the square root of 5xy^2\r
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document.write( "2x/the 4th root of 3xy^2\r
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document.write( "x/3- the square root of x\r
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Algebra.Com's Answer #64878 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The square root of 27x^3y^5 \n" ); document.write( "= [sqrt(9x^2y^4)[sqrt(3xy)] \n" ); document.write( "= [3xy^2][sqrt(3xy)] \n" ); document.write( "-------------------------- \n" ); document.write( " \n" ); document.write( "The cubed root 125x^9y^5/8x^3z^12 \n" ); document.write( "= cbrt[(125/8)x^6y^3 / z^12]*cbrt[y^2] \n" ); document.write( "=[(5/2)x^2y/z^4]*cbrt(y^2) \n" ); document.write( "--------------------------\r \n" ); document.write( "\n" ); document.write( "1/the square root of 5xy^2 \n" ); document.write( "Multiply numerator and denominator by sqrt(5x) to get: \n" ); document.write( "[sqrt(5x)] / [5xy] \n" ); document.write( "---------------\r \n" ); document.write( "\n" ); document.write( "2x/the 4th root of 3xy^2 \n" ); document.write( "Multiply numerator and denominator by 4th root of (3^3x^3y^2) to get: \n" ); document.write( "[2x*4th rt of (27x^3y^2)] / [3xy] \n" ); document.write( "Cancel the common factor of \"x\" to get: \n" ); document.write( "(2/3)[4th rt of (27x^3y^2)]/[3y] \n" ); document.write( "=============\r \n" ); document.write( "\n" ); document.write( "x/[3- sqrt(x)] \n" ); document.write( "Multiply numerator and denominator by (3+sqr(x)) to get: \n" ); document.write( "[x(3+sqrtx]/[9-x] \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |