Question 14
Nonzero real numbers satisfy $(a-a^{-1})^2+(b-b^{-1})^2+(c-c^{-1})^2=0$. Which cannot equal $a+b+c$?
IKMC 2020 - Grades 11-12 - Brazil Second Application - Self-study Question 14
IKMC · IKMC 2020 - Grades 11-12 - Brazil Second Application - Self-study