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Every positive number has two square roots, though the roots are not always whole numbers (or even rational numbers). The more obvious of each numbers roots is the positive one.

The positive square root of 4 is 2, because 2*2=4.

The positive square root of 5 is roughly 2.236068.

The other square root of a number is the negative inverse of their positive root. This is because when two negative numbers are multiplied together the negative signs "cancel out", leaving a positive number.

The negative square root of 4 is -2, because -2*-2=4.

The negative square root of 5 is roughly -2.236068.

Zero has only one square root, itself, and no negative number has any (real number) square roots, since no number multiplied by itself will result in a negative.

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Q: How many square roots can a positive number have?

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2, a positive and a negative eg 9 = 3 x 3 and -3 x -3

There are 3 cube roots of 27. There are 2 square roots of 27 ( or any real number ). There are 4 fourth roots of 27 and so on:)

Assuming that you mean the nth. root: two - a negative and a positive root.

In general, the answer is 4, but only 2 of them are real. For example, the 4th roots of 16 are 2, -2, 2i, and -2i.

There is no special symbol for an irrational number. However, it is known that many square roots, cubic roots, etc., as well as some special numbers such as pi and e, are irrational.

Related questions

Every number has two square roots. They're the same size, but one is positive and the other is negative.

Two, a positive and a negative.

Every positive number has TWO square roots. The principal square root is the positive number which, when multiplied by itself, gives the number in question. But its negative equivalent will also be a square root. For example, the number 4 has 2 as the principal sqrt but -2 is also a sqrt of 4

The square root of positive number can be ether a matched set of positive or negative numbers. As an example the square root of 4 can be either (-2 x -2) or (+2 x +2)

no,a negative number cannot have a square root .it is made only for positive numbers .but,yes,negative numbers can be squared.

Negative numbers do not have "real number" square roots.However, they will have two roots (when using imaginary numbers) as do other numbers, where a root including i(square root of -1) is positive or negative.

The root of a perfect square will be an integer, but will be both the positive and negative values. For instance, the square root of 4 is plus or minus 2 (±2), as both integral answers are valid. The positive real root is the answer that many books give. It is sometimes called the primary root. But the key point is both roots are valid.

All positive numbers have two. 0 has only one. Negative numbers have two imaginary roots but no real ones.

2, a positive and a negative eg 9 = 3 x 3 and -3 x -3

Every positive real number has two square roots: one negative and one positive. As a result, the square root mapping is one-to-many and so is not a mathematical function. One way to make it a function is to restrict the range to non-negative real numbers. These are the non-negative square roots.

there is no cube roots in negative

The square root of 0 is 0. Since 0 has no positive or negative equivalent, this is its only square root.