$\frac{sin\theta\:\left(1+cos\theta\:\right)+sin^2\theta\:}{sin\theta\:\left(1+cos\theta\:\right)}$

$\frac{d}{dx}\left(x^2+3xy=-2x^2y\right)$

$x^2+7x-10<0$

$-\frac{7}{2}\sec\left(bx^2+7\right)$

$72y+43y+24x+32y+21x+12x$

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

$\left(x+y+2\right)\left(x+y-2\right)-2\left(xy-2\right)$