Find the cube of :
2a+1/2a (a≠0)
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x>0 and x²+1/9x²=25/36, find x³+1/27x³. 1. See answer.
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Given that :x² + 1/9x² = 25/36Adding and subtracting 2/3( x )² + ( 1/3x )² + 2( x )( 1/3x ) - 2/3 = 25/36( x + 1/3x )² = 49/36 ( x + 1/3x ) = 7/6Cubing ... More
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