(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100) (+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/14 04:45:54
![(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100) (+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)](/uploads/image/z/9491698-10-8.jpg?t=%28%2B1%29%2B%28%E4%B8%802%29%2B%28%2B3%29%2B%28%E4%B8%804%29%2B%E2%80%A6%2B%28%2B99%29%2B%28%E4%B8%80100%29+%28%2B1%29%2B%28%E4%B8%802%29%2B%28%2B3%29%2B%28%E4%B8%804%29%2B%E2%80%A6%2B%28%2B99%29%2B%28%E4%B8%80100%29)
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100) (+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100) (+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
(3一9)一(21一3) (一3 2(3一9)一(21一3) (一3 2/3)一(一1 2/3)一(一1·75)一(一2 3/4)
一1一2一3一...一1000
计算:1+2+3一4一5一6+7+8+9一10一11一12+……+2019一2020一2021一2022
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
一(3+2)一(一4)=?
(+1)+(一2)+(+3)+(一4)+…+(+99)+(一100) (+1)+(一2)+(+3)+(一4)+…+(+99)+(一100)
将一4,一3,一2,一1,0,1,2,3,
(一0.5)一(一3又1/4)十6.75一5又1/2
4(2X一9)+3(X一15)=7(X一1)一2
1002一1001+1000一999+……+4一3+2一1简算
1一2十3一4十5一6…十99一100
1一2十3一4十5一6+...一1000
4(2x一7)一2(x一1)=3(x一1)一2 x=?
(7y一2x)一(7x一4y) (一b十+3a)一(4a一b) ((7y一2x)一(7x一4y) (一b十+3a)一(4a一b) (一8x的2次方+6x)一(5x的2次方一4x+1)
(3X平方一2)一(4X平方一2X一3)十(2X平方一1)其中X=一2
(1)(十66)一(一34)十71一29 (2)9十5x(一3)一(一2)^2除4
规律题,1,一2,一3,4,一5,一6,7,一8,一9,10以此类推,问100和2012是正还是负?
1一2一3+4+5一6一7+8+9一……一2006+2007+2008=