### Theory:

Polynomials
polynomial is an expression consisting of variables and constants which involves four fundamental arithmetic operations $$($$$$+$$, $$-$$, $$\times$$, $$\div$$$$)$$ and non-negative integer exponents of variables.
Example:
• $$5$$
• $$3x + 2$$
• $$\frac{x^{2}}{2} - 8x + 1$$
• Classification of polynomials
Zero of a polynomial or Root of a polynomial
If $$p(x)$$ is any polynomial and $$x = a$$ is said to be the root or zero of a polynomial if $$p(a) = 0$$.

Also, if $$p(a) = 0$$ then $$a$$ is said to be the root of the polynomial equation $$p(x) = 0$$.