$\left(-\sqrt{5xy^2}+4x^2y\right)\left(-\sqrt{5xy^2+4x^{2y}}\right)$

$\left(x^2+3\right)^3$

$\left(\left(1+x\right)\cdot\left(1-x\right)\right)^4$

$\left(+5\right)-\left(+7\right)-\left(-2\right)+\left(+5\right)-\left(-3\right)$

$\frac{16m^2n^6+9m^4n^2}{4mn^3-3m^2n}$

$\frac{\csc\left(x\right)^3}{-3}+csc\left(x\right)$

$\left(1100-135\right)+\left(680-75\right)+\left(800-120\right)-267$