$\int\frac{2x+7}{x^2+7x-8}dx$
$3^4\cdot3^{-6}\cdot9^0$
$28+\left(+1\right)$
$64-z^8$
$-12-\left(-2\right)+4-11$
$0<3x+2$
$\left(2t-t+2\right)\left(t-2\right)$
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