$\left(sinx\right)\left(cosx\right)\left(tanx\right)\left(secx\right)\left(cscx\right)$
$e^{\frac{x}{2}}-1-senx+\frac{x}{2}$
$8x^2-5x+7-+2x^2+7x+11$
$-6a^3b^2c\:\:si\:a\:=-2\:b=3\:d=-4$
$2x-5y+2y-3x$
$\tan^2\left(x\right)\left(\csc^2x-1\right)=1$
$-3x^2y+12xy^2$
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