$-28+\left(230\right)-\left[-3-\left(-11\right)\cdot7-12\cdot3\right]$
$\left(3x-1\right)\left(1-2y\right)$
$\left(3-x\right)\left(\frac{7}{x^2}-6\right)$
$\lim_{x\to\frac{\pi}{2}}\left(\frac{\sin\left(x\right)-\cos\left(x\right)-1}{x-\frac{\pi}{2}}\right)$
$x^2+28x-115$
$\frac{11.7361}{2.4627\:}$
$\left(4z^5\right)^3$
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