$-3x-4<8$
$\int\frac{1}{\left(3+x^2\right)^2}dx$
$cosx\:cos^2y\:dx\:-\:senx\:sen2y\:dy\:=0$
$\left(cscx+\frac{1}{2}\right)\left(3cotx-\sqrt{3}\right)=0$
$a^3=w$
$\int2\tan\left(x\right)\sec\left(x\right)^3dx$
$\left(7m+11\right)^2$
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