$-2<5x-2$
$3\sqrt{4x+7}5-8x$
$4\left(3a+5b+8c\right)+\left(-3\right)\left(a+4b\right)+6\left(4b+\left(-5c\right)\right)$
$\frac{\sqrt{a^2+3b^2}}{5a-3b}\:+\:\frac{a}{b}$
$\left(6^2\right)\left(6^2\right)$
$\left(\frac{3}{2x}+1\right)\left(\frac{3}{2x}-1\right)$
$\int\frac{\left(e^r-2^rln2\right)}{e^r-2^r}dr$
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