$\frac{d}{dx}7x^2-2$
$8.6+4.5$
$\lim_{n\to\infty}\left(\sqrt[n]{\frac{n+1}{2^n+5^n}}\right)$
$\int z^3e^zdx$
$\int3\left(50+t\right)^2dt$
$\left(\cos\left(x\right)+6\right)\left(\cos\left(x\right)-6\right)$
$t=3s+3.22$
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