已知:字母a、b满足 a-1+b-2=0.求1ab+1(a+1)(b+1)+1(a+2)(b+2)+…+1(a
已知:字母a、b满足根号a-1+根号b-2=0,求:1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+…+1
已知:字母a,b满足√a-1+√b-2=0,求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+.1/(a+
已知:字母a、b满足 a-1+b-2=0.求1ab+1(a+1)(b+1)+1(a+2)(b+2)+…+1(a
已知有理数a,b满足|a+b-2|+(a^2*b^2+2ab+1)=0,求代数式:(a-2b+3)(a-2b-3)-(b
已知实数a,b满足:a^2+b^2=ab+a+b-1,求a+b之值
已知实数a,b满足ab=-1/5,a+b=4/5,求a^2b+ab^2-a^3b^2-a^2b^3
已知a、b满足a²+2b²-2ab-1=0,求a+2b的值
已知a,b满足a²+2b²-2ab-1=0,求a+2b的值
已知实数a、b满足a(a=1)-(a²+2b)=1求a²-4ab+4b-2a+4b的值
已知实数a,b满足a(a+1)-(a^+2b)=1,求a^-4ab+4b^-2a+4b的值
已知实数a,b满足a*(a+1)-(a²+2b)=1,求a²-4 ab+4b²-2a+4b
已知有理数a、b满足a(a+1)-(a²+2b)=1,求a²-4ab+4b²-2a+4b的