$w=e^{xyz}$

$\left(2x+10\right)\left(2x-1\right)$

$\left(+3.9\right)+\left(+.47\right)+\left(+24.11\right)+\left(+346.7\right)$

$\left(a^2+\frac{3}{5}\right)\left(a^2-\frac{3}{5}\right)$

$\frac{d^2}{dx^2}\left(r=\frac{12}{x}-\frac{4}{x^2}+\frac{1}{x^4}\right)$

$x\frac{dy}{dx}+4y=-x^2$

$4n^2+\left(2n+1\right)\left(2n+1\right)$