a^99+a^98+2^97+2^96+2^95+……+2+1
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a^99+a^98+2^97+2^96+2^95+……+2+1a^99+a^98+2^97+2^96+2^95+……+2+1a^99+a^98+2^97+2^96+2^95+……+2+1设A=a^99
a^99+a^98+2^97+2^96+2^95+……+2+1
a^99+a^98+2^97+2^96+2^95+……+2+1
a^99+a^98+2^97+2^96+2^95+……+2+1
设A=a^99+a^98+2^97+2^96+2^95+……+2+1
则2A=a^100+a^99+a^98+2^97+2^96+2^95+……+2
下式-上式
A=a^100-1
a^99+a^98+2^97+2^96+2^95+……+2+1=a^100-1
a-2a+3a-4a+5a-6a+...+99a-100a
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
（a－1）（a^99+a^98+a^97+……+a^2+a+1)简便方法!还有个(-2)^49+(-2)^48+.+(-2)+1
a^99+a^98+2^97+……+2+1
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
计算A+(A+D)+(A+2D)+.+(A+99D)
a^99+a^98+2^97+2^96+2^95+……+2+1
化简 a-2a+3a-4a+5a'''''''+99a-100a a=-2 的值
化简a-2a+3a-4a+5a-6a…+99a-100a
当a=1时,a-2a+3a-4a+5a…+99a-100a=
计算：(a+1)(a-1)(a^2+1)(a^4+1)(a^8+1)计算：100^2-99^2+98^2-97^2+…+2^2-1^2
化简多项式a-2a+3a-4a+5a-...+99a-100a用下面方法解决 a-(a+b)+(a+2b)-(a+3b)+...-(a+101b)解法1：a-2a+3a-4a+5a-..+99a-100a =(a+3a+5a+..+99a)+(-2a-4a-6a-...-100a)=2500a-2550a=-50a解法2：a-2a+3a-4a+5a-...+99a-100a=(a-2a)+(3a-4a)+(5a-6a)+..
化简:a-2a+3a-4a+.+99a-100a怎么算
a-2a+3a-4a+.99a-100a=
a-2a+3a-4a+.+99a-100a的值为（ ）
急……ab/(a+b-1)(a+b) + ab/(a+b)(a+b+1) + ab(a+b+1)(a+b+2) + …… + ab/(a+b+98)(a+b+99) + ab/(a+b+99)(a+b+100)
计算ab/(a+b-1)(a+b)+ab/(a+b)(a+b+1)+ab/(a+b+1)(a+b+2)+.+ab/(a+b+98)(a+b+99)+ab/(a+b+99)(a+b+100)
化简（a/a-2-a/a+2)×4-a/a（a/a-2-a/a+2)×4-a/a