document.write( "Question 1089503: 5x^6 – 8x^3 = 4 \n" ); document.write( "

Algebra.Com's Answer #703833 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Introduce new variable y = x^3. Then your equation takes the form\r\n" );
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document.write( "5y^2 - 8y = 4.\r\n" );
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document.write( "5y^2 - 8y - 4 = 0,\r\n" );
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document.write( " =  =  = .\r\n" );
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document.write( "1.   =  = 2  ====>  x^3 = 2  ====>  x = .\r\n" );
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document.write( "2.   =  =   ====>   x^3 = -0.4  ====>  x = .\r\n" );
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