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Using binomial theorem expand (x^(2)+(1)...

Using binomial theorem expand `(x^(2)+(1)/(x^(2)))^(4)`

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`(x^(2)+(1)/(x^(2)))^(4)=(x^(2))^(4)+.^(4)C_(1)(x^(2))^(3)((1)/(x^(2)))+.^(4)C_(1)(x^(2))^(2)((1)/(x^(2)))^(2)+.^(4)C_(3)(x^(2))((1)/(x^(2)))^(3)+.^(4)C_(4)((1)/(x^(2)))^(4)`
`=x^(8)+4x^(4)+6+(4)/(x^(4))+(1)/(x^(8))`
Hence `(x^(2)+(1)/(x^(2)))^(4)=x^(8)+4x^(4)+6+(4)/(x^(4))+(1)/(x^(8))`
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