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①> ② ③ ④(a+)2>(b+)2 ⑤(a+)2>(b+)2
A.1 B.2 C.3 D.4
① ② ③ ④(a+)2>(b+)2 ⑤(a+)2>(b+)2
①|a|>|b| ②a+b<ab ③>2 ④<2a-b