$\int\frac{4t}{5+2t+t^2}dt$
$\left(3m-5y\right)\left(3m+5z\right)$
$\sqrt[2]{-81}$
$-11a^3b-15a^3b+26$
$\frac{1^{-5}-2^{-7}}{2^{-2^2}1^3-2^{-4}}$
$\left(2x^3\cdot2x\right)^2$
$sin^2\left(x\right)\:+\:7\:cos\left(x\right)\:+\:17$
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