作业帮18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/13 02:10:34
![18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6](/uploads/image/z/10215207-63-7.jpg?t=18a%5E2-%7B-6a%5E2%2B%5B5a-4a%5E2-%28a%5E2-2a%29%5D%2B15a%5E2-5a%7D%2C%E5%85%B6%E4%B8%ADa%3D-1%2F6)
18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
18a² - {-6a²+[5a-4a²-(a²-2a)]+15a²-5a}
= 18a² - {-6a²+[5a-4a²-a²+2a]+15a²-5a}
= 18a² - {-6a²+5a-4a²-a²+2a+15a²-5a}
= 18a² - {4a²+2a}
= 18a² - 4a² - 2a
= 14a² - 2a
= 14×(-1/6)² - 2×(-1/6)
= 14×1/36 + 2×1/6
= 7/18 + 1/3
= 13/18
化简得，12a^2+2a
a=-1/6
12a^2+2a=12(-1/6)^2+2(-1/6)=1/3-1/3=0
a-2a+3a-4a+5a-6a+...+99a-100a
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
(a+3a+5a+...+2009a)-(2a+4a+6a+...+2008a)=
(a+3a+5a+.+2009a)-(2a+4a+6a+.2008a)
计算（a+3a+5a+...+2009a)-(2a+4a+6a+...+2010a)
(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=
化简：a-2a+3a-4a+5a-6a+.+2010a+2011a.
计算(a+3a+5a+.+2003a)-(2a+4a+6a+...+2004a)
(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a)
（a+3a+5a...+2009a)-(2a+4a+6a+...+2010a)=?
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
18a^2-{-6a^2+[5a-4a^2-(a^2-2a)]+15a^2-5a},其中a=-1/6
(a+3a+ 5a+```+2007a)-(2a+4a+6a+```+2008a)=?(a+3a+ 5a+```+2007a)-(2a+4a+6a+```+2008a)等于多少?写出过程和代数式,
合并同类项：a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
化简a+2a-3a-4q+5a+6a-7a-8a+...2001a+2002a-2003a-2004a