what is answer of [ ³-x - ²-x² ]³
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( a - b) ^3 = a^3 -(3) a ^2b + (3)ab^2 - b^3
(3/x - 2/x^2 )^3
= (3/x)^3 -3 (3/x)^2(2/x^2) +3(3/x)(2/x^2)^2-(2/x^2)^3
= 27/x^3 -52/x^4 + 36/x^5 - 8/x^6
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Identity
( a - b) ^3 = a^3 -(3) a ^2b + (3)ab^2 - b^3
(3/x - 2/x^2 )^3
= (3/x)^3 -3 (3/x)^2(2/x^2) +3(3/x)(2/x^2)^2-(2/x^2)^3
= 27/x^3 -52/x^4 + 36/x^5 - 8/x^6
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