問題詳情
10. 甲、乙、丙、丁四人分別計算二元一次式的化簡，請問計算錯誤的有幾個人？
甲：5(2x－5y)＝10 x－5y
乙：－5x＋4 x＋7y＝－x＋7y
丙：－(－2x＋3y－5) ＝2x－3y＋5
丁：2(2x－4y) ＋(x＋6y)＝5x－2y
(A)1 人
(B)2 人
(C)3 人
(D)4 人
甲：5(2x－5y)＝10 x－5y
乙：－5x＋4 x＋7y＝－x＋7y
丙：－(－2x＋3y－5) ＝2x－3y＋5
丁：2(2x－4y) ＋(x＋6y)＝5x－2y
(A)1 人
(B)2 人
(C)3 人
(D)4 人
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
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