Question

how to find a root number is rational or irrational number​

Answer 1

Answer:

An irrational number cannot be expressed as a ratio between two numbers and it cannot be written as a simple fraction because there is not a finite number of numbers when written as a decimal. Instead, the numbers in the decimal would go on forever, without repeating.

Answer 2

Step-by-step explanation:

Suppose an elementary school has a square playground with an area of 3000 square feet. Could you find the width of the playground? Would the width be a rational or irrational number?

Square Roots and Irrational Numbers

The square root of a number

n

is any number

s

such that

s2=n

.

Every positive number has two square roots, the positive and the negative. The symbol used to represent the square root is

x−−√

. It is assumed that this is the positive square root of

x

. To show both the positive and negative values, you can use the symbol

±

, read “plus or minus.”

For example:

81−−√=9

means the positive square root of 81.

−81−−√=−9

means the negative square root of 81.

±81−−√=±9

means the positive or negative square root of 81

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