Multiplying any complex number by its conjugate will result in a positive real number.
For any complex number x + yi, {x and y are real numbers} its conjugate is x - yi, and the multiplication equals x2 + y2
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A negative. If you have a string of positive and negative numbers multiplied together, all you need to find the sign of the answer is to find the parity of the negative numbers. If there are an odd number of negatives then the answer is negative and if there are an even number of negatives then the answer is positive. Remember, positive numbers make no difference to the sign of the answer.
Pretend both the numbers are positive, find the quotient as normal and then make it negative.
No. Adding negative numbers will make them more negative.
Yes.
That is false. A negative times a negative is always a positive. Since absolute numbers are always positive if you make it negative that is not correct.