$\int\left(3x+x^2\right)\sin\left(x\right)dx$

$\frac{m^6-n^3}{m^2+n}$

$y\cos\left(x\right)-\cos\left(x\right)+\frac{dy}{dx}=0$

$b^2-10b+24$

$\int_4^1\left(1200x\right)\sqrt{5+4x}dx$

$\sec\left(x\right)-\sin\left(x\right)\tan\left(x\right)\tan$

$-3ab^2+6a-7b-8a+9ab^2$