Question

[Quỳnh Như]

Tìm các số A, B, C để có:
a) \(\dfrac{x^2-x+2}{\left(x-1\right)^3}=\dfrac{A}{\left(x-1\right)^3}+\dfrac{B}{\left(x-1\right)^2}+\dfrac{C}{x-1}\)

b) \(\dfrac{x^2+2x-1}{\left(x-1\right)\left(x^2+1\right)}=\dfrac{A}{x-1}+\dfrac{Bx+C}{x^2+1}\)

Answer 1

[Quỳnh Như]

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