3. Explain what's wrong with the following solution, and provide a correct solution to the question. Question. Find limx x2 6 x + 6 . Solution. Use the idea of higher power domination to conclude limx x2 6 x + 6 = limx x2 x = limx x x = 1.

4. Explain what's wrong with the following solution, and provide a correct solution to the question. Question. Find limx (x2 + 1 + x ) . Solution. limx (x2 + 1 + x ) = + = . 1