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Mathematics 21 Online
OpenStudy (anonymous):

what is the sum or difference? 4x^10 - 9x^10 a. -5x^10 b. -5x^20 c. -36x^10 d. -36x^20

OpenStudy (anonymous):

Why ask the same question twice? http://openstudy.com/study#/updates/54e4c4f4e4b0aba126e825aa

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