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Since x by itself is the same as 1x, the expression can be re-written as

1x+2x

Then, ignore the x's and simply add the numbers to obtain

1x+2x=3x

3x is your answer.

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Wiki User

13y ago
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Wiki User

13y ago

x2 + x

x(x + 1)

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Q: What is x2 plus x?
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