# How do you simplify (x^2 + 4x)/( 4x + 16 )?

$\frac{{x}^{2} + 4 x}{4 x + 16} = \frac{x \left(x + 4\right)}{4 \left(x + 4\right)} = \frac{x}{4}$
with exclusion $x \ne - 4$