The square root of any positive real number (as in this case) is a real number. (Such square roots are usually irrational.)The square root of a negative real number, such as the square root of -15, is an imaginary, and therefore also a complex, number.
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The square root of 24 is a real but an irrational number that can't be expressed as a fraction.
A complex number for example. Complex numbers involve i, the imaginary square root of -1.
Not necessarily. The square root of 4 are +/- 2 which are Real numbers, NOT imaginary. Although, since the Reals are a subset of Complex numbers, the above roots would belong to the Complex numbers.
The square root of 100 is rational since it is not repeating.
Square roots of negative numbers are complex, meaning that they carry a 'real' and an 'imaginary' part. Here the real part is approximately 5.8309518948453 and the imaginary part is i.
Complex numbers are numbers of the a + bi where a and b are real number and i is the imaginary square root of -1.