Practice: Tricky 0/0 Limit

If limx 2 42 f(x)2x\displaystyle\lim_{x\ \rightarrow2}\ \frac{4-2\ f\left(x\right)}{2-x} is defined, what is the value of limx 2  f(x)\displaystyle\lim_{x\ \rightarrow2}\ \ f\left(x\right) ?

Practice: Tricky 0/0 Limit

Evaluate limx0 3x+2 4x+22x+1x+1\displaystyle \lim_{x\to0}\ \frac{\sqrt{3x+2}-\ \sqrt{4x+2}}{\sqrt{2x+1}-\sqrt{x+1}}