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Yes. In general, the square root of any non-negative number is a real number.

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Q: Is the square root of 2 a real number?
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The nonnegative square root of a number?

The unique nonnegative square root of a nonnegative real number. For example, the principal square root of 9 is 3, although both -3 and 3 are square roots of 9.


What is it example of a real number that is not a rational number?

the square root of 2


A number that is real and irrational?

Square root of (2) Pi


What is an Example of a real number that is not a rational number?

pi, or the square root of 2.


Is the square root of 4 a real number?

Yes. The square root of 4 is 2, because 2 times itself is 4.


What is the quare root of -1?

The square root of -1 is not a real number like -2.5, 0, or 5. Instead, it is and imaginary number, i, and i = the square root of -1. The answer is imaginary because you can never take a real number, square it, and get a negative number. However, i^2 = -1.


What is an example of a real number that is not rational?

The square root of 2 is real number but it is not rational number because it can't be expressed as a fraction.


Is there a square root of -28?

No, there is no real number that satisfies the equation √(-28). The square root of a negative number is not defined in the real number system. However, if we extend our number system to include complex numbers, we can define a square root of -28 as √(-28) = 2√7i, where i is the imaginary unit.


Is every real number also a rational number?

No. "Pi", "e", and the square root of 2 are all real and irrational.


Is the square root of 2 a rational number?

No because it can't be expressed as a fraction and so therefore the square root of 2 is an irrational number.


Is the square root of -4 irrational?

The square root of -4 is not irrational, it is imaginary. Irrational numbers are numbers that cannot be expressed as a fraction, like the square root of 2. Irrational numbers, however, are a subset of real numbers. The square root of -4 however, is not even a real number because no real number, when squared, gives -4. Therefore the square root of -4 is an imaginary number.In calculus, the root is expressed as 2i where iis the square root of -1.


What is an imaginary number?

The square root of a negative real number is an imaginary number.We know square root is defined only for positive numbers.For example,1) Find the square root of (-1)It is imaginary. We say that square root of (-1) is i.In fact they are not real numbers.2) Find the square root of (-4)-4 can be written as (-1)(4)Square root of 4 is 2 and square root of (-1) is iSo, the square root of -4 is 2i.Similarly, we can find the square root of other negative numbers also.Source: www.icoachmath.comAn imaginary number is defined to handle square roots of negative numbers. The imaginary unit i is defined as the 'positive' square root of -1.