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What is the difference between an Equation and a polynomial?

A polynomial is an expression of finite length constructed from variables (also called indeterminates) and constants, using only the operations of addition, subtraction, multiplication, and non-negative integer exponents.
For example, x2 ? x/4 + 7 is a polynomial.
An equation, in a mathematical context, is generally understood to mean a mathematical statement that asserts the equality of two expressions.
This is written by placing the expressions on either side of an equals sign (=), for example
 x + 3 = 5.


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