$\frac{\left(1+sin^2x\right)}{\left(1+cos^2x\right)}$
$\left(-7x-5\right)^2$
$\lim_{x\to\infty}\left(1-\frac{1}{\pi\cdot x}\right)^x$
$5x+3y+2x$
$sen\:c\:.\:sec\:\:c\:\:=\:\:tan\:c$
$\sin\left(3m\right)=1$
$\left(z+0.6\right)\left(z-0.3\right)$
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