Problem: 3+22−3−22\sqrt{3+2 \sqrt{2}}-\sqrt{3-2 \sqrt{2}}3+22−3−22 is equal to
Answer Choices:
A. 222
B. 232 \sqrt{3}23
C. 424 \sqrt{2}42
D. 6\sqrt{6}6
E. 222 \sqrt{2}22 Solution:
The required difference is 222 because it is positive and its square is 444 .