$5\cdot\left(-1\right)\cdot\left(-1\right)\cdot\left(-1\right)\cdot\left(-1\right)$
$1-2+3-4+5-6+7-8+9-10$
$9^2\cdot9^{-2}$
$7\cdot27$
$\sin\left(a\right)\cot^2\left(a\right)$
$\sqrt{x}\frac{dy}{dx}=e^{4y+\sqrt{x}}$
$3xy+6xz+12xw$
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