It has 3 parts:
1. a sign, being positive (+) or negative (-)
2. a number, called ‘the coefficient’
3. a letter, called ‘the variable’
Every term must have a sign. If there isn’t one, assume there is an unwritten positive sign. Negative signs must always be written.
Terms must have a number. If there isn’t one, assume an unwritten coefficient of ‘one’.
Terms may or may not have a letter. If there is a variable and it has a power above the variable (ex:a^3), the power belongs only to the variable.
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