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標題:
(x+1)-(x-1)=....... How to solve it
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(x+1)-(x-1)=............ Detail explaination pls..........
最佳解答:
(x+1)-(x-1) =x+1-x+1 =2
其他解答:
(x+1)-(x-1) =x+1-x+1 =2 要小心d後面既係x+1，唔好因為一唔小心，有好多人會唔記得要負負得正! 要多加留意，避免出錯~|||||(x+1)-(x-1) =x+1-x+1 = 2|||||(x+1)-(x-1) = x +1 - x +1 =2 ....
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