[first lines]
Student: If, and only if, both sides of the numerator is divisible by the inverse of he square root of the two unassigned variable.
School Professor: Good. Except when the value of the "X" coordinate is equal to or less than the value of one. Yes Isaac?
Student: What about *that* problem?
School Professor: Oh, that? Don't worry about that.
Student: Wait. Why?
School Professor: I just put that up as a joke. That's probably the hardest geometry equation in the world.
Student: Well, how much extra credit is it worth?
School Professor: Well, considering I've never seen anyone get it right, including my mentor Dr. Leaky at MIT, I guess if anyone here can solve that problem, I'd see to it that none of you ever have to open another math book again for the rest of your lives.