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How to open the square root?
To know how to open the square root, we must first understand the formula of the square root.

1, using the formula, we can know that the square of 2 is 2*2=4, so √4 is equal to 2 after root. It can also be seen that √9=3, √ 169= 13?

2. Square root = 1.4 14 (three decimal places are reserved). Can be calculated according to the calculation chart.

Extended data:

Double nonnegativity

If x=√a

So:

1, a≥0 (if less than 0, it is an imaginary number)

2、x≥0

Relationship with square root

A positive number has two square roots, which are opposite numbers, and a non-negative square root is the arithmetic square root of this number.

Negative numbers have no arithmetic square root.