Class 9 Math: polynomials

In Class 9 Math, the topic of number system is an in-

The number system is the process of representing numbers on the number line using certain rules and a number line is a depiction of numbers on a straight line with a specified interval between them

The number system is used to do mathematical computations ranging from complex scientific computations to basic operations

The number system includes the following subtopics:

Rational Numbers
Irrational Numbers
Integers

Let's discuss these subtopics in more

Rational Numbers: A rational number is a number that can be represented in the form of P/Q, where P and Q are integers and Q ≠ 0

Rational numbers include all integers, fractions, and terminating decimals

The set of rational numbers is closed under all four basic operations, that is, given any two rational numbers, their sum, difference, product, and quotient is also a rational number (as long as we don't divide by zero)

Irrational Numbers: Irrational numbers are numbers that cannot be expressed in the form of P/Q, where P and Q are integers and Q ≠ 0

Irrational numbers have endless non-repeating digits after the decimal point

The set of irrational numbers is not closed under the basic operations, and the sum, difference, product, and quotient of two irrational numbers can be either rational or irrational

Integers: The integers are a set of numbers that includes all positive and non-

The set of integers is closed under the basic operations, and the sum, difference, product, and quotient of two integers is also an integer (as long as we don't divide by zero)

The number system is an