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For any two non-zero rational numbers `a` and `b ,\ a^4-:b^4` is equal to (a)`(a-:b)^1` (b) `(a-:b)^0` (c) `(a-:b)^4` (d) `(a-:b)^8`

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Verified by Experts

`=a^4divb^4=(adivb)^4`.
Hence, option (c) is the correct answer.
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