$1-\left(\sin\left(x\right)\right)^2=\frac{1-\cos\left(x\right)}{2}$
$81x^4-18x^2+1$
$\left(\frac{x^2}{\left(4x^2+12\right)^3}\right)$
$\frac{dy}{dx}=2y^3-3y^2-2y$
$2\left(9x\right)\left(-12\right)$
$-32-\left(-24\right)-\left(-17\right)-26-35-\left(-13\right)-27-\left(-31\right)-52-\left(-42\right)$
$6.6+7.6$
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