$+7-6+5-4-3+2-8$
$\int\frac{x-2}{\left(x^{2}+1\right)\left(x-1\right)}dx$
$13-\left(9+3\right)$
$sec^2\left(x\right)+7tan\left(x\right)+11=0$
$x^2+2xb+b^4$
$\left(-134\right)^0$
$\left(4+b\right)\left(b-8\right)$
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