Answered

Which of the following equations has ?i, i, and 0 as its only roots?
A. x2 ? 1 = 0
B. x2 + 1 = 0
C. x2 + x + 1 = 0
D. x3 ? x = 0
E. x3 + x = 0

Sagot :

B..x^2+1=0
     X^2    =-1
     square root of X^2=square root of -1
     X=undefined