$\left(7a^7-4b^3\right)^3$
$s\left(t\right)=t^{-\frac{1}{2}}\left(ln\left(t\right)+2\right)+\frac{1}{2}t^2+3t-\frac{1}{2}$
$34.5+13.4$
$4+3-\left(-6\right)-7$
$6^{4-7}$
$\left(x-y\right)\left(x^2-xy+y^2\right)$
$\int\frac{x^{2}-91}{x+9}dx$
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