# Polynomials

Polynomials - Complete Collection#### Summary

###### Class 9 Maths: Polynomials - Complete Collection

#### Overview

Polynomial is an expression consisting of variables and coefficients that involves only the operations of addition, subtraction, multiplication, and** non-negative integer exponents**. Eg p(x)=x^{2} − 8x + 9.

It is denoted by p(x) or q(x) or r(y) etc

It is typically used in the field of Physics, Chemistry, Civil Engineering, Finance etc. A polynomial can be represented graphically.

**Variable & Constants**: Variable is denoted by Symbol that can take any real values. E.g. x, y, z letters are used to denote variable. E.g. x is variable in polynomial p(x)=ax^{2} − 8x + 9.

Value of constant remains same throughout a particular situation. E.g. 1, 2, 3 a, b, c etc. By conventions a, b,c are constants & x,y z are used as variables. Value of constant does not change in a given problem but value of variable keep changing. E.g. a, 8 & 9 are constant in the polynomial p(x)=ax^{2} − 8x + 9.

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