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Equation PLZ HELP: X+X equals what?

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im doing some studying to refresh my mind. so tell me, what does X+X equal? does it equal nothing, or 2X, or X2^ ???

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  1. It equals simply 2X.

    You're welcome.


  2. X+X = 2X

    X and 2 are not like terms. X and X would be considered like terms.

    For example:

    5X + 7X + 2X^2

    The 5X and 7X are like terms.
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