Question

Can anybody tell me what a polynomial is?

Answer 1

A polynomial is any expression that has variables (such as x) and coefficients (the things in front of the variable; i.e. in 5x, 5 is the coefficient), that involves only the operations of addition, subtraction, multiplication, and non-negative exponents. A few examples are $x^{2} +3x$, $x^{7} -1$, and $x^{3} + x^{2} +x+5$.

Some examples of non-polynomials include $x^{2}$, x+1, x+x+y-y. If you need any more help or examples, I can provide more.

Answer 2

A polynomial is an equation/expression that contains one or more terms. Generally speaking, it applies to 3 or more.