$\frac{sen\left(x\right)}{\cos\left(x\right)+1}-\frac{cos\left(x\right)}{sec\left(x\right)}=1$
$5x-8<4+2x$
$3n^2\cdot4n^2$
$\frac{d}{dx}arcsecx^2+arccotx^3$
$\int x\left(-\sin\left(x^2\right)^{-1}\right)dx$
$\frac{3x^3-8x^2+6x-5}{x+2}$
$-1\:x\:3\:x\:-7\:x\:3$
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