$-2x^5y^2z+5x^2y^3-2x^{10}$
$\lim_{x\to-0}\left(\frac{e^{3x}-1}{x}\right)$
$3y^2\left(3x^2\right)$
$\left(1+\tan\left(y\right)\right)\left(1-\cot\left(y\right)\right)$
$30\:x\:4$
$\:-\:5x=\:-15$
$\left(x^2+\frac{1}{4}\right)\left(x^2\frac{3}{4}\right)$
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