Question

what is use of √
how it's work
​

Answer 1

Answer:

A square root asks you which number, when multiplied by itself, gives the result after the √ symbol. So √9 = 3 and √16 = 4. Every root technically has a positive and a negative answer, but in most cases the positive answer is the one you'll be interested in.

Answer 2

Answer:

it is a square root

Step-by-step explanation:

so $\sqrt{4}$ is 2 because 2^2 = 4