maths[4]

2007-11-18 1:43 am

1+2+3+4.........+99=

[-2][-2]=

7a-3h+92a-56h=

回答 (3)

2007-11-18 1:48 am

✔ 最佳答案

1+2+3+4.........+99
= (1 + 99) x 99 /2
=4950

[-2][-2]
= 4

7a-3h+92a-56h
= 99a-61h

參考: me

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2007-11-18 1:49 am

4950

4

99a-59h

其實唔知你係想要答案定點...不過都答左你先~有咩問題歡迎e mail我

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2007-11-18 1:49 am

(-2)(-2)

=+4

7a-3h+92a-56h

=7a+92a-3h-56h

=99a-59h

2007-11-17 17:51:23 補充：
1+2+3+4+...+99=(1+99/2)X2=100

參考: ME

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