$\tan\left(x\right)^22=1$
$-63+-48+39+4$
$25x^2-36y^6$
$\left(-x+\frac{2}{x}\right)^2$
$-56\int\:x^5dx$
$x\sin\left(y\right)\frac{dy}{dx}=\cos\left(y\right)$
$3-2\cdot3-2-1\cdot2$
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