$2\cdot\left(\frac{5x}{2}\right)\cdot3z$
$36x^2-12+1$
$sin\left(5\left(\frac{\pi}{4}\right)-\pi\right)$
$x+1+2x+x+4$
$\lim_{x\to\infty}\frac{x^4-2x^2+x-3}{x^3+2x^2-x+1}$
$cos\left(177.4767\right)$
$\frac{2}{7}2^{5}n^{2}$
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