Resolve (1)/(x^(4)-3x^(2)-4) into partic...

Resolve `(1)/(x^(4)-3x^(2)-4)` into partical fractions.

A

`(1)/(5(x^(2)-4))+(1)/(5(x^(2)+1))`

B

`(1)/(5(x^(2)-4))-(1)/(5(x^(2)+1))`

C

`(1)/(4(x^(2)+4))-(1)/(4(x^(2)+1))`

D

`(1)/(4(x^(2)+4))+(1)/(4(x^(2)+1))`

Verified by Experts

`(1)/(x^(4)-3x^(2)-4)=(Ax+B)/(x^(2)-4)+(Cx+D)/(x^(1)+1)`.

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