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統計: A(7), B(0), C(0), D(2), E(0) #1774114
統計: A(7), B(0), C(0), D(2), E(0) #1774114
詳解 (共 1 筆)
#7211241
(A) 2(x+1)-1
2(x+1)-1= 2x+2-1
= 2x+1≠ 2x
2(x+1)-1= 2x+2-1
= 2x+1≠ 2x
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