$535\left(-726\right)\left(-43\right)\:$

$70n^2+35m^2n^3$

$\frac{1}{sin^2x}-\frac{1}{1-cosx}=\frac{2+cosx}{sin^2x}$

$ax+ay$

$16-\left\{-\left[3+\left(-5+2\right)\right]\right\}-\left\{-\left[-9-\left(-12\right)\right]\right\}$

$\int x^{13}\sqrt{x^7+2}dx$

$16x^2+80x=0$