A polynomial is an expression of finite length constructed
from variables and constants, using only the operations of
addition, subtraction, multiplication, and non-negative
integer exponents.
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A polynomial is either zero or can be written as the sum of a
finite number of non-zero terms. Each term consists of the
product of a constant (called the coefficient of the term) and a
finite number of variables (usually represented by letters)
raised to whole number powers.
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Polynomials can be added or subtracted using the associative
law of addition (grouping all their terms
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