计算:(b/a)^2÷(a/b)-b^3/a^3(a-b) ÷ 1/a-b
计算:(b/a)^2÷(a/b)-b^3/a^3(a-b) ÷ 1/a-b
计算(a-b)^m(a-b)[2(b-a)]^3[(b-a)^5]^2÷(a-b)^m=
1:计算2(a+b)^2/(a+b)-3(a+b)/(a+b).
计算a^-2b^-3*(-3a^-1b^2)÷6a^-4b^-2
[(3a+2b)(3a-2b)+(a+2b)^2]÷(2a)计算
计算a^-2b³÷(a²b)^-3
计算a+b/b-a-b/b
计算a+(a-b)+(a-2b)+(a-3b)+.+(a+99b)
计算a+[a+b]+[a+2b]+[a+3b]+...+[a+99b]
计算:a+(a+b)+(a+2b)+(a+3b)+……+(a+99b)
已知2a-b+1的绝对值+(3a+3/2b)^=0,求(b^/a+b)÷{[(b/a-b)+1][a-(a^/a+b)]
计算:a/b(a-b)-b/a(a-b);(1/a+1/b)÷a²+2ab+b²/a+b.