$3a^2+10a+7$
$3^2+\left(-4\right)^2$
$\int\left(x^4\right)\left(\ln\left(x\right)\right)^2dx$
$\lim_{x\to0}\left(\frac{3arc\tan\left(2x-6x\right)}{4x^2}\right)$
$8^{-x}=4^{-3x+3}$
$\int_0^2-22xdx$
$5\left(k\:+\:6\right)\:+\:7\left(k\:-\:4\right)$
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