# Math

x * 2x = 2x^2 (check)

5x^3 + 2x^5 = ?

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1. yes, x(2x) = 2x^2

for the 2nd, we cannot add "unlike" terms, one is x^3, the other is x^5, not the same

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posted by Reiny

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3. yes

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posted by Damon

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