$4x^2+y^2-z^2+8z-16=0$
$2\frac{dy}{dx}=e^{2x+3y}$
$\cos\left(x\right)\cos\left(y\right)^2+\cos\left(x\right)\sin\left(y\right)^2$
$3x^3+3x^3$
$\int e^{-1}xdx$
$\frac{-x^4-4x^3+6x^2-7}{x^2-2}$
$e^4=y$
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