如果|ab-2|+(b-1)²=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|ab-2|+ (b-1)(b-1)=0,试求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+
如果|ab-2|+(b-1)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)的平方=0,试求:ab分之1+(a+1)(b+2)分之1+.+(a+2007
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)
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)
如果有理数a、b满足|ab-2|+|1-b|=0,试求1/ab+1/(a+1)(a+1)+1/(a+2)(a +2)+.
如果a+b=3,ab=-1,那么(a+b)2-a-b+ab=?
如果a²+ab=4,ab+b²=-1求a²-ab-2b²
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)^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)+.