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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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Q: If a and negative b are complex numbers what will make it positive?
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Related questions

What is a negative times a positive times a positive?

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.


Is it always true that two negatives make a positive?

Adding two negative numbers will always be negative. Subtracting two negative numbers may be positive or negative. Dividing or multiplying two negative numbers will always be positive.No


How do you find the quotient of the two numbers when one is positive and one is negative?

Pretend both the numbers are positive, find the quotient as normal and then make it negative.


How do you subtract two negative numbers?

2 negatives make a positive


Can the sum of two negative integers equal a positive number?

No. Adding negative numbers will make them more negative.


Do 2 positive numbers make a positive answer?

Often, but not always. It depends upon what you do with them. If the numbers are not equal, and you subtract the larger from the smaller, the answer will be negative.


Is a positive plus a negative make a positive or a negative?

Positive + Negative = Negative Negative + Negative = Positive Positive + Positive = Positive Negative + Positive = Negative


In a fraction if the top and bottom numbers are negative does that make the fraction positive?

Yes.


To multiply a negative number and a negative number you should multiply their absolute values and make the product negative true or false?

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.


Why product of two positive numbers is positive?

Cuz there's nothing to make it negative.... Just think of it as regular multiplying instead... Unless there is a negative...


Can positive and negative make a negative?

Yes, if you are adding 2 numbers together and the value of the negative number is larger than the value of the positive number. Yes, if you are multiplying a positive and a negative number together. Yes, if you are dividing a positive and a negative number by each other.


Can rational numbers be negative?

Any rational positive number is still rational when you make the same number negative.