$3x^2+19x^2$
$3\sin^2\left(x\right)+4\sin\left(x\right)-9$
$-12+27-14-19+63-28$
$\frac{dy}{dx}=ln\:x\:-\:4x^2$
$\cot\left(\left(x^3+x^2-x\right)^2\right)$
$-45-39$
$s^2-10s+13$
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