Question

write a particle fraction for decomposition for the rational expression

1) x^2+12x-9/ x^3 - 9x

Answer 1

(x^(2)+12x-9)/(x^(3)-9x)

(x^(2)+12x-9)/(x(x^(2)-9))

(x^(2)+12x-9)/(x(x-3)(x+3))

(A)/(x)+(B)/(x-3)+(C)/(x+3)

Answer 2

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