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If 4x + 3a = 0, then what is the value o...

If `4x + 3a = 0`, then what is the value of `(x^(2) + ax + a^(2))/(x^(3) - a^(3)) -(x^(2) -ax + a^(2))/(x^(3) + a^(3))` ?

A

`-4/(7a)`

B

`7/a`

C

`-32/(7a)`

D

`24/(7a)`

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