我係小六,Teacher給了1 Question: (-1)-(-1) ? 是不是2?
2006-10-13 15:54:46 · 4 個解答 · 發問者 tyt1d38lwkltc 3 in 科學 ➔ 數學
(-1)-(-1)是不是2，讓我來解決!!!!!!
(-1)-(-1)=2
L.H.S: (-1)-(-1)
= -1+1
= 0
R.H.S: 2
So (-1)-(-1) is not equal to 2.
2006-10-13 23:40:29 補充：
L.H.S is Left Hand SideR.H.S is Right Hand Side
2006-10-13 19:39:21 · answer #1 · answered by 安迪 3 · 0⤊ 0⤋
(-1)-(-1) = -1 + 1 = 0
2006-10-13 18:21:27 · answer #2 · answered by 肥 紀 3 · 0⤊ 0⤋
No !
(- 1) - ( - 1)
= (-1) + 1
= 0
Because
a - (- b) = a + b
2006-10-13 15:57:34 · answer #3 · answered by J 7 · 0⤊ 0⤋
(-1)-(-1) = (-1) + 1 = 0
因為第二個1是負負得正
2006-10-13 15:57:16 · answer #4 · answered by 路人甲 7 · 0⤊ 0⤋