$\left(x+2\right)^3-\left(x-1\right)\left(x+1\right)x^3-\left(x-3\right)^2$

$sin^2x-2sin+1$

$\left(\left(4x^2y^3\right)^{-2}\left(2x^2y^{-2}\right)^2\right)^{-2}$

$\frac{d^3}{dx^3}\left(e^{x^2-3}\right)$

$\sqrt[4]{625\cdot x^5}+\sqrt{27\cdot y^8}$

$16m^{4\:}-25a^{10}$

$6x+4y<4y+8$