What is the root number 3?

Method:

The square of the number 4 is 2, and 2 is the result of its square.

This number that uses two identical numbers to represent a number is called a square root.

4 = 2x2 equals 2 times 2.

9=3x3 Nine equals three times three.

16 = 4x 4； 25 = 5x536 = 6x649 = 7x764 = 8×8； 8 1 = 9x 9； 100= 10x 10

2, 3, 4, 5, 6, 7, 8, 9, 10 is the number after 4 and 9, 16, 25, 36, 49, 64, 8 1, 100.

Extended data

Root, also called root, refers to the operation of finding the square root of a number, which is the inverse operation of a power (see the entry "square root"). In ancient China, it also refers to finding the positive roots of quadratic and higher-order equations (including binomial equations). Within the range of real numbers, negative numbers cannot be even roots. Positive roots are also called arithmetic roots.

Inverse operation with root as power, including square root, square root or n power. For example, if the square of 2 is 4, the square of 4 is 2, the cube of 2 is 8, the square of 8 is 2, the fifth power of 2 is 32, and the square root of 32 is 2.

Baidu Encyclopedia-Prescription (Mathematical Term)