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You can describe it as a number defined such that i squared = -1.You can also define the complex plane first, and then describe an imaginary number as a complex number in which the real part is zero.

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An imaginary number is the square root of a negative number.

Q: What best describes an imaginary number?

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

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

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

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.

No, it is an imaginary number which is a complex number.

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

It describes an imaginary society.

The answer to this question is confident and heroic, respectful, and the Raven.

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

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.

-125 is NOT an imaginary number.

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

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

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

rational

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