$\lim_{x\to0}\left(\frac{\frac{1}{x+1}-\frac{1}{\sqrt{1-x^2}}}{2x}\right)$
$2x+1\:+\:2x-1$
$-8748-6561$
$\int\frac{\left(x^7-5x\right)}{x^5}dx$
$\int e^{-sx}\cdot\left(2x^2\right)dt$
$-\frac{11}{10}m+\frac{1}{4}m$
$ln\left(\frac{e^2}{\sqrt[5]{x^3}}\right)$
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