计算:(b/a)^2÷(a/b)-b^3/a^3(a-b) ÷ 1/a-b

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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:(b/a)^2÷(a/b)-b^3/a^3(a-b)÷

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:(b/a)^2÷(a/b)-b^3/a^3(a-b) ÷ 1/a-b
(b/a)^2÷(a/b)-b^3/a^3(a-b) ÷ 1/(a-b )
=(b/a)^2×(b/a)-b^3×(a-b )/a^3(a-b)
=(b/a)^3-b^3/a^3
=(b/a)^3-(b/a)^3
=0