$6-38+27+\left(-8\right)+126$

$\frac{d}{dx}\left(5xy^2+8y-3x^2=0\right)$

$\left(x+\frac{1}{y}\right)\left(y+\frac{1}{x}\right)$

$\int\left(\left(x^2+2x-4\right)^2\left(x+1\right)\right)dx$

$\left(\frac{c^3}{c^5}\right)^3$

$y'-x^2y=x^2y^{-4}$

$4\left(-2\right)^2-2\left(-2\right)\left(1\right)+5\left(1^3\right)$