$\cos\left(g\right)\left(\csc\left(g\right)-\sec\left(g\right)\right)+1$

$\int\left(\frac{x^4-2x^3+x^2+9x-7}{x^2-2x+1}\right)dx$

$x^3\frac{dy}{dx}=x^4y^2-2x^2y-1$

$36ab+60xy$

$12x^3+24x^2-30x$

$\left\{\left[-2\left(6a+5b-21\right)-3b\right]-\left(2a-3b+14\right)\right\}$

$\left(2p^3.2p\right)^2$