$\frac{3x-5}{4}-\frac{x-9}{5}<\frac{x+3}{3}-6$
$\arcsin\left(\frac{2}{6}\right)$
$\frac{1}{\cos\left(x\right)\csc\left(x\right)}$
$-69x^2+81$
$\text{x}-12=-x^2$
$\lim_{x\to\infty}\left(\frac{3+\frac{2}{y^3}-3y^4}{9y^4-\frac{5}{y^2}-3}\right)$
$\left(\left(a+b\right)^2+\left(a-b\right)^2\right)^2$
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