$81^{t+.5t^2}$
$-8\cdot30$
$\int\frac{x^{2}}{\left(yx^{3}+7\right)^{2}}dx$
$x\sqrt[1]{x-1}$
$37-\left(-41\right)$
$3x^2+4x-15$
$\frac{-3\cos\left(x\right)+4\cos\left(x\right)\sin\left(x\right)}{\sin\left(x\right)}=0$
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