$x^2+\left(k+7\right)x+\left(7k+1\right)$
$7x^2-28x-5$
$\left(3^{10}\right)^6$
$\int2x^2e^{-3}dx$
$\int\frac{x-5}{\left(x-2\right)\left(x-3\right)}dx$
$-12+\left(-\sqrt[2]{64}\right)+\left(-17\right)+4$
$\left(3x^2+4w^4\right)^3$
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