$-sin\left(x\right)+\frac{sin^2\left(x\right)}{cos\left(x\right)}$
$3b\left(2a+5\right)-4a\left(2a+5\right)$
$4\left(3z-1\right)\ge4$
$\frac{a^4b^5}{a^3b}$
$41\cdot45$
$\sqrt{8}\cdot\left(-3\sqrt{10}\right)$
$4\left(-3\right)^2\left(\frac{1}{2}\right)-6\left(-3\right)\left(\frac{1}{2}\right)\left(-\frac{1}{3}\right)+2\left(\frac{1}{2}\right)^2+\left(-3\right)^2\left(-\frac{1}{3}\right)$
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