Mathematics Question

2008-09-23 6:17 am
-2
------- =
0+(-3) ________
更新1:

-[-2/0+(-3)] × -3^2 / 2 ÷ -3 / (-7)^2 = ________

回答 (1)

2008-09-23 6:50 am
✔ 最佳答案
(1) = 2/3
(2)
-[-2/0+(-3)] -3^2 / 2 -3 / (-7)^2
= -(2/3) x 9/2 x 49/(-3)
= 49


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