$\sqrt{-121}$
$\left(-4\right)\cdot\left(-3\right)^2$
$\cos^260\:mas\:\sec^260$
$\lim_{x\to0}\left(e^x-e^{-x}-2\sin\left(x\right)\right)\frac{1}{3x^2}$
$px+py+qx+qy$
$5.4-7.-2.-3+2.-10-3.-4.-2$
$100^{t^2-0.5t}$
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