SOLUTION: Simplify each expression. i22 I have the answer = i2 = -1 I just don't know how my professor got that answer.

Algebra ->  Expressions -> SOLUTION: Simplify each expression. i22 I have the answer = i2 = -1 I just don't know how my professor got that answer.      Log On


   

Question 929698: Simplify each expression.
i22
I have the answer = i2 = -1
I just don't know how my professor got that answer.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
you know that sqrt%28-1%29=i-complex root
%28sqrt%28-1%29%29%5E2=-1
or i%2Ai=i%5E2=sqrt%28-1%29%2Asqrt%28-1%29=%28sqrt%28-1%29%29%5E2=-1
it's not clear why you have i22; you might mean this %28sqrt%28i%5E2%29%29%5E2=%28sqrt%28-1%29%29%5E2=-1