Find the value of limx→2x2−4x+2
0
Direct substitution works here, usually the question is to find the limit limx→2x2−4x+2. This cannot be
solved by direct substitution.
In our case,
limx→2x2−4x+2=limx→2x2−4limx→2x+2=04=0
We can directly substitute x=2 and find the limit in this problem.