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If x+1/x=7, find xsqrt(x)+1/(xsqrt(x))=?...

If `x+1/x=7`, find `xsqrt(x)+1/(xsqrt(x))=?`

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`x+1/x=7`
And we want to find `x√x+1/x√x=?`
ok
First if we will do cube of `(x+1/x)^3` and then we will get
...
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