$2\cos\left(x\right)^2+3\sin\left(x\right)$
$\sqrt[2]{4^6}$
$-21\:+\left(-1\right)+\left(-13\right)\:+\left(-24\right)$
$9a^2-30+25$
$\frac{1}{a^0}$
$\left|\left(-2\right).\left(-2\right)+\left(-3\right)\right|^2.\left(-5\right)-5$
$\sqrt[3]{10a^9b^8}$
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