posted by Lucy on .
Which of the following is NOT a root of z^2 = 1-sqrt3i to the nearest hundreth.
Thanks for any help you can give me.
I don't get it. NONE of those numbers, when squared, give you anything close to 1 - i sqrt3. In polar form r(e^i theta), the magnitude r of a valid answer would have to be 2. None of the four choices comes close.
I agree with drwls.
I simply squared some of your answers and should have gotten 1-√3i
none worked, so none are roots.