Simplify: fracx2−16x−4\\frac{x^2 - 16}{x - 4}fracx2−16x−4 (assume x≠4x \neq 4x=4).
x+4x + 4x+4
x−4x - 4x−4
x2−4x^2 - 4x2−4
frac1x+4\\frac{1}{x+4}frac1x+4