Combine $\left(\frac{1}{u}\right)^2+\frac{-1}{x}$ in a single fraction
The power of a quotient is equal to the quotient of the power of the numerator and denominator: $\displaystyle\left(\frac{a}{b}\right)^n=\frac{a^n}{b^n}$
Multiply the fraction by the term $x$
Combine $-1+\frac{x}{u^2}$ in a single fraction
Divide fractions $\frac{\frac{x-u^2}{u^2}}{x}$ with Keep, Change, Flip: $\frac{a}{b}\div c=\frac{a}{b}\div\frac{c}{1}=\frac{a}{b}\times\frac{1}{c}=\frac{a}{b\cdot c}$
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