What's 9 + 10?
Guys, it isn't Energy=(mass*the speed of light)2, it's Egg=masterchef2, proving that 9+10 DOES = 21. If you look closely, you'll see that the circle on top of the 9 is an egg, and the 0 in the 10 is also an egg, so we have 2 eggs. Then take the 1 from the 10 and put it after the 2; and you get 21.