$\frac{1-\sin^2x}{1+cot^2x}$
$\int\left(x-3\right)^{0.25}dx$
$\frac{54\left(3x-2\right)}{6\left(x-2\right)\left(3x-2\right)}$
$0.30\left(590-950i\right)=0.15\left(1000+900i\right)$
$9x^2+4x^2+25$
$\frac{144m^2-36n^2}{12m-6n}$
$\left(xyz\right)^5$
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