Recent content by alwaysconfuse

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    How can I solve complex root problems without using De'Moivre's theorem?

    Homework Statement What is the square root of z=-9Homework Equations The Attempt at a Solution Is it possible of me to not use De'Moivre's theorem to solve this question?? Solution : z= \sqrt{-9} z=\sqrt{9} x \sqrt{}-1 z=\pm3 i Will this method be acceptable?? Is this still under the topic...