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Best Answer

x + x = 2x. Similarly, x^3 + x^3 = 2(x^3)

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Wiki User

12y ago
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Anonymous

Lvl 1
4y ago

X to the 6

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Anonymous

Lvl 1
4y ago
It's 2x to the 3rd

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Anonymous

Lvl 1
4y ago

7

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Q: What is x cubed plus x cubed?
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