document.write( "Question 73823: Can you help me. I have an exam tomarrow. I forgot how to simplify radical expressions. One of the problems I am having trouble with is:\r
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document.write( "3?(2a^(7)b^(2))
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document.write( "(2) 3?(5x^(7)y)\r
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document.write( "(I do not know how to make cubed roots; the index is three.)\r
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document.write( "I know the answer is:\r
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document.write( "(y) 3?(150x)
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document.write( "10x^(2)\r
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document.write( "please show me how\r
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document.write( "thank you so much!! \n" );
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Algebra.Com's Answer #52814 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! simplify radical expressions. One of the problems I am having trouble with is: \n" ); document.write( "3?(2a^(7)b^(2)) \n" ); document.write( "COMMENT: I assume this problem is \"cube root of (2a^7 b^2)\" \n" ); document.write( "You want the cube root so separate the perfect cubes from the other factors, \n" ); document.write( "as follows: \n" ); document.write( "= (cube rt. of a^6)(cube rt. of 2ab^2) \n" ); document.write( "Since the 1st factor is a perfect cube you have: \n" ); document.write( "=a^2*(cube rt of 2ab^2) \n" ); document.write( "-------------------- \n" ); document.write( "(2) 3?(5x^(7)y) \n" ); document.write( "COMMENT: I assume this problem is \"cube root of (5x^7 y)\"\r \n" ); document.write( "\n" ); document.write( "Break it up into perfect cube and \"the rest\", as follows: \n" ); document.write( "=(cube rt. of x^6)*(cube rt of 5xy) \n" ); document.write( "= x^2*(cube rt of 5xy) \n" ); document.write( "================== \n" ); document.write( "(I do not know how to make cubed roots; the index is three.) \n" ); document.write( "I know the answer is: \n" ); document.write( "(y) 3?(150x) \n" ); document.write( "Where did you get that answer?? That is not the answer to \n" ); document.write( "the problem you posted. \n" ); document.write( "----------- \n" ); document.write( "COMMENT: \n" ); document.write( "I think you may not have posted your problems correctly.\r \n" ); document.write( "\n" ); document.write( "-------------------- \n" ); document.write( "10x^(2) ??????????? \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |