What is the formula for calculating the square root?

Conclusion: The greater the number of roots, the greater the corresponding arithmetic square root (true for all positive numbers).

If a positive number has a square root, then there must be two, and it is reciprocal. Obviously, if you know one of these two square roots, you can get the other square root in time according to the concept of reciprocal.

The relationship between arithmetic square root and square root;

1, the prerequisite is the same: the prerequisite for the existence of arithmetic square roots and square roots is "only non-negative numbers have arithmetic square roots and square roots".

2. Inclusion relation: the square root contains the arithmetic square root, because the arithmetic square root of a positive number is only one of its two square roots.

The arithmetic square root of 3.0, like the square root, is 0.