分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.16-x^2/x^2-2x-3÷x^2-5x+4/x-3
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![分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.16-x^2/x^2-2x-3÷x^2-5x+4/x-3](/uploads/image/z/2110292-44-2.jpg?t=%E5%88%86%E5%BC%8F%E7%BA%A6%E5%88%86a-b%2Fa%5E2%2Bab%E4%B9%98a%5E2b%5E2-a%5E4%2Fab-a%5E2.x%5E2-3x%2Fx%5E2-6x%2B9%E4%B9%98x%5E2-11x%2B30%2Fx%5E2-5.16-x%5E2%2Fx%5E2-2x-3%C3%B7x%5E2-5x%2B4%2Fx-3)
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分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.16-x^2/x^2-2x-3÷x^2-5x+4/x-3
分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.
16-x^2/x^2-2x-3÷x^2-5x+4/x-3
分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.16-x^2/x^2-2x-3÷x^2-5x+4/x-3
分式约分a-b/a^2+ab乘a^2b^2-a^4/ab-a^2.
=(a-b)/a(a+b)×a²(b²-a²)/a(b-a)
=a-b;
x^2-3x/x^2-6x+9乘x^2-11x+30/x^2-5.
=x(x-3)/(x-3)²×(x-5)(x-6)/(x²-5)
=x(x-5)(x-6)/(x-3)(x²-5);
16-x^2/x^2-2x-3÷x^2-5x+4/x-3
=(4+x)(4-x)/(x-3)(x+1)×(x-3)/(x-1)(x-4)
=(x+4)/(1-x²);
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