$\left(cos\:t\:-\:sen\:t\right)^2$

$b^2-10b+21$

$\frac{dy}{dx}=2y^3$

$\int ( x ^ { 3 } - 5 x ) ^ { 5 } ( 3 x ^ { 2 } - 5 ) d x$

$\left(-3cd\right)\left(-3cd\right)\left(-3cd\right)\left(-3cd\right)$

$dy=\left(\csc\left(x\right)-y\cot\left(x\right)\right)dx$

$\int\frac{3x+5}{x^2-3x+2}dx$