$\lim_{x\to\infty}\left(\frac{9x^2+5x}{2x^3+2x+7}\right)$
$4x^2\:+\:\:28x\:+\:49$
$\int x^2\left(x^3+4\right)^{-\frac{1}{2}}dx$
$\left(\frac{1}{3}+xy\right)\left(-\frac{1}{2}+xy\right)$
$\left(\frac{2}{3\:x}+y\right)^2$
$3x^2-7x+8=0$
$7^5$
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