$\lim_{x\to0}\left(\frac{\sin^2\left(x\right)}{\sin\left(x^2\right)}\right)$
$\frac{x^3+1}{x}$
$\frac{z+78}{2}=20$
$\sqrt{\left(-5\right)^3}\cdot\sqrt{5^3}$
$11m+2=12m-6$
$\int_0^{\infty}\sin\left(a\right)dx$
$\frac{dy}{dx}=\frac{1}{x}+\frac{1}{xy-x}$
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