document.write( "Question 1199265: Solve for x.\r
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\n" ); document.write( "\n" ); document.write( "2x^(2/3) - 5x^(1/3) - 3 = 0\r
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\n" ); document.write( "\n" ); document.write( "Using the Diamond Method, I got the following:\r
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\n" ); document.write( "\n" ); document.write( "2x^(2/3) - 6x^(1/3) + x^(1/3) - 3 = 0\r
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\n" ); document.write( "\n" ); document.write( "I then applied factoring by group.\r
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\n" ); document.write( "\n" ); document.write( "2x^(1/3)[x^(1/3) - 3] \r
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\n" ); document.write( "\n" ); document.write( "Setting each factor to 0 and solving for x, I got the following \r
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\n" ); document.write( "\n" ); document.write( "values: 0, 27\r
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\n" ); document.write( "\n" ); document.write( "According to the textbook, x = 27 is one of the solutions.\r
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\n" ); document.write( "\n" ); document.write( "The second value of x should be -1/8. \r
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\n" ); document.write( "\n" ); document.write( "I did everything I could think of to find the second value of x but to no avail.\r
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\n" ); document.write( "\n" ); document.write( "How do I find x = -1/8?\r
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Algebra.Com's Answer #833059 by ikleyn(52790)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Solve for x     2x^(2/3) - 5x^(1/3) - 3 = 0
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document.write( "Prepare your equation to factoring using grouping-regrouping  (in the same way as you did in your post)\r\n" );
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document.write( "    2x^(2/3) - 6x^(1/3) + x^(1/3) - 3 = 0\r\n" );
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document.write( "Now factor left side step by step\r\n" );
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document.write( "    2x^(1/3)*(x^(1/3)-3) + (x^(1/3) - 3) = \r\n" );
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document.write( "    (x^(1/3)-3)*(2x^(1/3)+1) = 0.\r\n" );
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document.write( "From this factored form you have EITHER first parentheses expression is zero, \r\n" );
document.write( "OR the second parentheses expression is zero.\r\n" );
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document.write( "(a)  Case  x^(1/3)-3 = 0.\r\n" );
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document.write( "     It gives  x^(1/3) = 3,  which implies  x = 3^3 = 27.\r\n" );
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document.write( "(b)  Case  2x^(1/3)+1 = 0.\r\n" );
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document.write( "     It gives  2x^(1/3) + 1  0,  which implies  x^(1/3) = \"-1%2F2\",  x = \"%28-1%2F2%29%5E3\" = \"-1%2F8\".\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "The answers/(the solutions)   are   x= 27   and/or   x= \"-1%2F8\",   same as in your textbook.\r
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\n" ); document.write( "\n" ); document.write( "Victory (!)\r
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\n" ); document.write( "\n" ); document.write( "In your post, your very first step was correct, but your factoring after that was wrong.\r
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