$\int\frac{\sqrt{100+x^2}}{x}dx$
$\left(x^{n+1}-3^{n-2}\right)^2$
$-33\cdot\:\left(62-38\right)$
$\lim_{x\to0}\left(\frac{x^3-4x^2-5x}{x^3-5x}\right)$
$\int-csc\left(3x-1\right)\cot\left(3x-1\right)dx$
$a+b+a-b-2a-b$
$\left(-90\right)+\left(-12\right)+\left(-34\right)+\left(-68\right)$
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