计算(1)2x-6/x2-4x+4乘2x-4/x-3(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab

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计算(1)2x-6/x2-4x+4乘2x-4/x-3(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab
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计算(1)2x-6/x2-4x+4乘2x-4/x-3(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab
计算(1)2x-6/x2-4x+4乘2x-4/x-3(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab

计算(1)2x-6/x2-4x+4乘2x-4/x-3(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab
1 =2(x-3)/(x-2)^2*2(x-2)/(x-3)=4/(x-2)
2 =(a+b)^2/(b(a-b))*a(a-b)/(b(a+b))=a(a+b)/b^2

(1)2x-6/x2-4x+4乘2x-4/x-3
=2(x-3)/(x-2)^2 * 2(x-2)/(x-3)
=4/(x-2)
(2)a²+2ab+b²/ab-b²除ab+b²/a²-2ab
=[ab+b²/a²-2ab]/[a²+2ab+b²/ab-b²]
=[b(a+b)/a(a-2b)]/[(a+b)²/b(a-b)]
=[b(a+b)/a(a-2b)] *[b(a-b)/(a+b)²]
=b²(a-b)/[a(a-2b)(a+b)]