$4\left(-20\right)$
$\sin\left(x\right)=.65$
$3.\left(x+5\right)-10=x+13$
$\left(1+2\tan\:\left(x\right)\right)^2\:$
$\lim_{x\to0}\left(\frac{x^3-4x^2+5x}{x}\right)$
$\lim_{x\to2}\left(\frac{\left(\left|x-2\right|\right)x^3}{\left(x-2\right)}\right)$
$-65+4-9+86-54-6+5-45$
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