(a+b/a-b)²×2a-2b/3a+3b-a²/a²-b²÷a/b

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(a+b/a-b)²×2a-2b/3a+3b-a²/a²-b²÷a/b

(a+b/a-b)²×2a-2b/3a+3b-a²/a²-b²÷a/b
(a+b/a-b)²×2a-2b/3a+3b-a²/a²-b²÷a/b

(a+b/a-b)²×2a-2b/3a+3b-a²/a²-b²÷a/b
原式=(a+b)²/(a-b)²×2(a-b)/3(a+b)-a²/(a+b)(a-b)×b/a
=2(a+b)/3(a-b)-a/b(a+b)(a-b)
=(2a²b+4ab²+2b³-3a)/(3a²b-3b³)