$-5\left(-\left(+5+6-8\right)+9\right)-3\left(+7\left(-1+1-3\right)+3\right)$

$e^y\left(sen\:2x\right)\:dx+\:cos\:x\left(e^{2y}-y\right)dy=0$

$\lim_{x\to\infty}\left(5x^{\frac{1}{x}}\right)$

$6y^2x^2+3y^3x$

$\int\frac{3x+2}{\left(x\right)\left(x+1\right)\left(x-2\right)}dx$

$\frac{1}{1-\sin\left(x\right)}=\sec^2\left(x\right)+\tan\left(x\right)\sec\left(x\right)$

$\left(a+6b-5c\right)^2$