WHAT IS Polynomials

Polynomials is something which can be expressed in the following form:

a1 x^n + a2 x^(n-1) + a3 x^(n-2) + ... an

where n is integer (no matter +ve / -ve) , a 's are real numbers

Please refer to the following web site

http://www.purplemath.com/modules/polydefs.htm