$mx-my+mz$
$\lim_{x\to0}\left(\frac{sin\left(x\right)-1}{x}\right)$
$\left(2\right)^7$
$5x^2y\sqrt{30x^4}y^3$
$\lim_{x\to0}\left(\frac{\left(\pi-x\right)\cos\left(x-\frac{3\pi}{2}\right)}{1-\sec\left(x-\pi\right)}\right)$
$3x^2-x+8=0$
$4x^2-12x+9=7$
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