Derivatives of powers of polynomials

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

**Answer**

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

$=2\left(x-1\right)\left(1\right)$

$=2\left(x-1\right)$