Derivatives of powers of polynomials

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Find the derivative $\;\;\;\frac{d}{dx}\left(2x-1\right)^{-5}$

**Answer**

$\;\;\;\frac{d}{dx}\left(2x-1\right)^{-5}$

$=-5\left(2x-1\right)^{-6}\left(2\right)$

$=-10\left(2x-1\right)^{-6}$