Polynomials

Polynomials

Polynomial function: A polynomial function is a function whose terms each contain a constant multiplied by a power of a variable.
P(x) = a₀xⁿ + a₁x^n-1 + .................+ a_n-2x² + a_n-1x + an is a polynomial function 
where a₀, a₁, a₂,..., a_n are all real numbers and n is a non-negative integer.
Polynomial in one variable: a₀xⁿ + a₁x^n-1 + .................+ a_n-2x² + a_n-1x + an is a polynomial in one variable.

In other words

which are the following expression polynomial  of one variable and which are not,

1. x4-2x

2.xy4-5x2z

3.

1 is a polynomial of one variable 

2 it have three variable x y and z.

3 it have only one variable x so it is also one variable polynomial.

 now we can define as --> Polynomial comes from poly- (meaning "many") and -nomial (in this case meaning "term") ... so it says "many terms....
A 

A polynomial can have constant , variable and exponent....

A polynomial cannot break its in its pole until its not equal to zero.