$-5a^2b-3ab^2$
$\frac{\left(3\cdot2^x\right)}{\left(5^x\right)}$
$\left(3x-7y-4z\right)-\left(-3z+4y-7x\right)$
$\frac{28.3}{53.1}$
$\left(43x+86\right)^2$
$\left(h+4\right)\left(h-4\right)$
$\int_{-2}\sqrt{-4\left(x+1\right)}dx$
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