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Because it's not.

However, if you were to take the square root of -16, the answer would be 4i, which is an imaginary number, considered imaginary because multiplication of a real number by itself cannot equal a negative number.

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Q: Why is -16 considered an imaginary number?
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Related questions

Is the square root of -16 a real number?

No it is not. The answer is imaginary. The answer is 4i


What kind of number is the square root of -16?

Square root of -1 is an imaginary number (√-1 = i), √-16 = √-1 * √16 √-16 = i * 4 √-16 = 4 i


Is the square root of negative 16 a transcendental number?

No it is an Imaginary Number√-16 = 4ii is the square root of negative one


Can a number be imaginary but not pure imaginary?

Yes. The number 1 + i is imaginary but not pure imaginary, while 5i is pure imaginary.


Can a no real number be a pure imaginary number?

If a number is pure imaginary then it has no real component. If it is a real number, then there is no imaginary component. If it has both real and imaginary components, then it is a complex number.


Can you divide an imaginary number by a real number?

an imaginary number is imaginary so no (i guess) this answer kind of sucks


How do you simplify the imaginary number -125?

-125 is NOT an imaginary number.


What does 7 divided by imaginary number equal?

That quotient would be an imaginary number. The actual number depends on exactly what imaginary number you divide the 7 by.


Is the difference of a complex number and its conjugate a real imaginary or pure imaginary number?

It is a pure imaginary number.Since (a+bi)-(a-bi) = 2bi, it is a pure imaginary number (it has no real component).


Is -23 an imaginary number?

No, but √-23 is. An imaginary number is the square root of a negative number.


Whats an imaginary number?

An imaginary number is a number that has the square root of -1 as one of its factors.


Are imaginary and complex numbers the same?

No. A complex number is a number that has both a real part and an imaginary part. Technically, a pure imaginary number ... which has no real part ... is not a complex number.