$-67-23-\left(-64\right)+\left(-62\right)-28$
$f^2+9f+18$
$\int\frac{1}{x\left(3\ln\left(x\right)+5\right)}dx$
$2\sqrt{a+1}\left(2\sqrt{a+1}\right)$
$x^4-2x^2+15$
$10^4\cdot10^{-32}$
$-557+880$
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