maths

2006-10-14 3:54 am
我係小六,Teacher給了1 Question: (-1)-(-1) ? 是不是2?

回答 (4)

2006-10-14 7:39 am
(-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
2006-10-14 6:21 am
(-1)-(-1) = -1 + 1 = 0
2006-10-14 3:57 am
No !
(- 1) - ( - 1)
= (-1) + 1
= 0
Because
a - (- b) = a + b
2006-10-14 3:57 am
(-1)-(-1) = (-1) + 1 = 0
因為第二個1是負負得正


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