Simplify the complex fraction: 2−4x+21−2x+2\dfrac{2 - \dfrac{4}{x+2}}{1 - \dfrac{2}{x+2}}1−x+222−x+24 (assume x≠−2x \neq -2x=−2).
222
12\dfrac{1}{2}21
x+2x + 2x+2
xx−2\dfrac{x}{x-2}x−2x