2x-3/x^2-x-A/x-1+B/x求A+B
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2x-3/x^2-x-A/x-1+B/x求A+B2x-3/x^2-x-A/x-1+B/x求A+B2x-3/x^2-x-A/x-1+B/x求A+B2x-3/x^2-x=A/x-1+B/x2x-3=Ax+
2x-3/x^2-x-A/x-1+B/x求A+B
2x-3/x^2-x-A/x-1+B/x求A+B
2x-3/x^2-x-A/x-1+B/x求A+B
2x-3/x^2-x=A/x-1+B/x
2x-3=Ax+B(x-1)
=(A+B)x-B
∴A+B=2
B=3
x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1)
2x-3/x^2-x-A/x-1+B/x求A+B
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