计算:1.(-2xy^2)^2÷(1/3xy) 2.(8a^3b^4-5a^2b^2)÷(2ab)^2 3.(a-1)^2-(3a+1)(a-1)
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计算:1.(-2xy^2)^2÷(1/3xy)2.(8a^3b^4-5a^2b^2)÷(2ab)^23.(a-1)^2-(3a+1)(a-1)计算:1.(-2xy^2)^2÷(1/3xy)2.(8a^
计算:1.(-2xy^2)^2÷(1/3xy) 2.(8a^3b^4-5a^2b^2)÷(2ab)^2 3.(a-1)^2-(3a+1)(a-1)
计算:1.(-2xy^2)^2÷(1/3xy) 2.(8a^3b^4-5a^2b^2)÷(2ab)^2 3.(a-1)^2-(3a+1)(a-1)
计算:1.(-2xy^2)^2÷(1/3xy) 2.(8a^3b^4-5a^2b^2)÷(2ab)^2 3.(a-1)^2-(3a+1)(a-1)
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