$\left(-10m^6n\right)\left(-5m^2m^3\right)$
$\frac{3\sec^2\left(x\right)+4\tan\left(x\right)-3}{3\sec\left(x\right)\tan\left(x\right)+4\sec\left(x\right)}$
$3x\ge9$
$\cot^2x+\cot x$
$\lim_{y\to1}\left(y^2-2y^2+3y-4\right)$
$a2-7a+10$
$25-9i-12+5i$
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