Thread:John Lee Gamma Guild Team Vi Hart/@comment-25079450-20150906050807/@comment-28838092-20150909004208

No because they yield different solutions

sqrt(9) = x ====> x = 3 ====>because 3x3 = 9 x^2 = 9 ===> x = -3,3 ====> because 3^2=9,(-3)^2=9