(a+b\a-b)方*2a-2b\3a+3b-a方\a方-b方/a\b要全过程
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![(a+b\a-b)方*2a-2b\3a+3b-a方\a方-b方/a\b要全过程](/uploads/image/z/8804665-1-5.jpg?t=%EF%BC%88a%2Bb%5Ca-b%29%E6%96%B9%2A2a-2b%5C3a%2B3b-a%E6%96%B9%5Ca%E6%96%B9-b%E6%96%B9%2Fa%5Cb%E8%A6%81%E5%85%A8%E8%BF%87%E7%A8%8B)
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(a+b\a-b)方*2a-2b\3a+3b-a方\a方-b方/a\b要全过程
(a+b\a-b)方*2a-2b\3a+3b-a方\a方-b方/a\b要全过程
(a+b\a-b)方*2a-2b\3a+3b-a方\a方-b方/a\b要全过程
[(a+b)/(a-b)]^2*[(2a-2b)/(3a+3b)]-[a^2/(a^2-b^2)]/(a/b) =2(a+b)^2*(a-b)/[3(a-b)^2*(a+b)]-a^2b/[a(a+b)(a-b)] =2(a+b)/[3(a-b)]-ab/[(a+b)(a-b)] =2(a+b)^2/[3(a+b)(a-b)]-3ab/[3(a+b)(a-b)] =(2a^2+2b^2+4ab-3ab)/[3(a+b)(a-b)] =(2a^2+2b^2+ab)/[3(a^2-b^2)]