Mathematics, 23.07.2020 21:01 hiihihihij

Which of the following are identities? 1. x2 + 2xy + y2 = (x + y)2
II. 2x + 2 = 2(x + 1)
III. O + a = a

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Which of the following are identities? 1. x2 + 2xy + y2 = (x + y)2
II. 2x + 2 = 2(x + 1)

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More questions: Mathematics Another questions

Which of the following are identities? 1. x2 + 2xy + y2 = (x + y)2 II. 2x + 2 = 2(x + 1) III. O + a = a

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Another question on Mathematics

Which of the following are identities? 1. x2 + 2xy + y2 = (x + y)2
II. 2x + 2 = 2(x + 1)
III. O + a = a