$\lim_{x\to0}\left(\frac{x^3+1}{x-1}\right)$
$-9^2-5b^2$
$\int_5^5\left(10x^4\right)dx$
$\int\left(x-1\right)\cos\left(x^2-2x\right)dx$
$\left(m+21\right)^2$
$cos\left(x+\frac{\pi}{3}\right)+cos\left(x-\frac{\pi}{4}\right)$
$\frac { 1 } { 2 } = \frac { 1 } { p }$
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