$5\left(x^2+2x\right)$
$\int\:\frac{4x^2+3x+7}{\left(x+1\right)\left(x^2+1\right)}dx$
$2\cdot5^{x-4}+15=265$
$981\cdot\left(-2\right)$
$\frac{8ab^2c}{a^{-1}bc^{-3}}$
$60+-1$
$2x^2-5x-2$
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