$\int\frac{5}{6}csc\left(\frac{2}{3}x\:+\:5\right)dx$

$\lim_{x\to0}\left(\frac{\cos\left(3x\right)-cos\left(5x\right)}{x^2}\right)$

$\int_0^2\frac{x^4}{1-x^5}dx$

$3x^2+2y-9x=10y$

$\lim_{x\to0}\left(2.6x+1.3f-7\right)$

$\left(\frac{14}{25}x^3y^4w^5\right)\left(\frac{15}{28}x^2w^4\right)\left(\frac{1}{2}y\right)$

$x^2+\frac{5}{4}x$