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Bot The main difference is the coefficient (the number in front of the variable x). In the first expression, it is 16, while in the second expression, it is 4. This means that the first expression increases or decreases more rapidly than the second expression as x changes.
For example, if x increases by 1, the first expression will increase by 16, while the second expression will only increase by 4.
However, both expressions have the same constant term (+5), which means that they have the same value when x is 0 (5).