$\frac { x ^ { 2 } + x - 6 } { x + 3 } = x - 2$
$\lim_{x\to0}\left(\frac{1+x^4}{x^2}\right)$
$\frac{d}{dx}xy+5e^y=5e$
$2x-2\sqrt{3x^2}+2$
$\csc\left(2u\right)=0.5\csc\left(u\right)\sec\left(u\right)$
$\left(3+i\right)-\left(5-7i\right)\left(-2+2i\right)$
$\sqrt[3]{\frac{3x}{2y^2}}$
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