$\left(5x^3y^5+8z^4\right)\left(5x^3y^5-8z^4\right)$

$\left(-4\cdot3\right)^2$

$\frac{x-3\sqrt{x}}{\sqrt{x}}$

$\int x^3\left(e^{-4}\right)xdx$

$-3\cdot\left(-2x+4\right)<4x-2$

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

$\frac{d^2}{dx^2}\left(log\left[1+4\cdot x\right]\right)$