(a^2b-2ab^2-b^3)÷b-(a+b)(a-b),其中,a=1/2,b=-1
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(a^2b-2ab^2-b^3)÷b-(a+b)(a-b),其中,a=1/2,b=-1
(a^2b-2ab^2-b^3)÷b-(a+b)(a-b),其中,a=1/2,b=-1
(a^2b-2ab^2-b^3)÷b-(a+b)(a-b),其中,a=1/2,b=-1
(a^2b-2ab^2-b^3)÷b-(a+b)(a-b)
=a^2-2ab-b^2-(a^2-b^2)
=a^2-2ab-b^2-a^2+b^2
=-2ab
=-2×1/2×(-1)
=1
(a-b)^3+2ab(a-b)
(ab(a^-2ab)-a^2b(a-3b))÷(3a^b)
ab^3+b^2+b-a+1
(a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6)
(a-b)(3ab+2a²b-b³)
(a+b/a-b)²×2a-2b/3a+3b÷ab/a²-b²
a+b/2ab
2AB/A+B
a+b/2ab
(a²b-2ab²-b³)÷b-(a+b)(a-b)
计算(a+b)/(ab-b^2)÷(ab+b^2)/(a-b)^2=
ab/a+b=3 a-2ab+b/2a-3ab+2b?
[(a²+b²)/(a²-b²)-(a-b)/(a+b)]÷2ab/[(a-b)(a+b)³]
[(2b/a^2-b^2)+(a/a^2+ab)]÷3/a-b
3ab+3b²/b(a²+2ab+b²) ×a²-b²/a-b ÷b/a
(a-b/ab)^2•(b-a/-a)^-3÷1/(a^2-b^2)
(a-b)平方-2ab(b-a)
-ab(a^2b^5-ab^3-b)