#math trivia for #June25: #177 equals x^2 + 2^x for what integer x?

— Burt Kaliski Jr. (@modulomathy) June 25, 2012

Answer: *x* = 7. One way to solve this is to note that the largest that *x* can be is 7, otherwise 2* ^{x}* would exceed 177. That also happens to be the answer.