如果|ab-2|+|b-1|=0,试求1/ab+1/[(a+1)(b-1)]+…+1/[(a+2008)(b+2008)
如果|ab-2|+|b-1|=0,试求1/ab+1/[(a+1)(b-1)]+…+1/[(a+2008)(b+2008)
如果有理数a,b满足|ab-2|+(1-b)^2=0,试求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)…
如果有理数a,b满足|ab-2|+(1-b)的2次方=0 试求1/ab+1/(a+a)(b+1)+1(a+2)(b+2)
如果|ab--2|+(b-1)平方=o,试求1/ab+1/(a+1)(b+1)+…+1/(a+2008)(b+2008)
如果有理数a,b满足|ab-2|+|1-b|=0.试求1/ab+1/(a+1)(b+1)+1(a+2)(b+2)+…+1
如果a+b=3,ab=-1,那么(a+b)2-a-b+ab=?
如果有理数理a,b满足|ab-2|+(1-b)2=0试求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+.
如果有理数a,b满足|ab-2|+|1-b|=0,试求1 /ab+1/(a+1)(b+1)+1/(a+2)(b+2)+.
如果有理数a和b满足|ab-2|+|1-b|=0,试求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+..
如果有理数啊,a,b满足|ab-2|+(1-b)的二次方=0,试求1/ab+1/(a+1)(b+1)+1/(a+2)(b
如果有理数a,b满足|ab-2|+(1-b)^2=0,求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)…+
如果有理数a,b满足|ab-2|+|1-b|=0 试求 ab分之一+(a+2)(b+2)分之一+……+(a+2007)