$-\left(-3a+6b\right)$
$2\left(1-2sin^2x\right)=1$
$13-38+7x+2$
$10^2+11x+3$
$-95-\left(32-9\right)$
$\frac{d}{dx}\left(x^2\sec x-2x^2\cos x\right)$
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