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प्रश्न
Factorize each of the following expression:
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उत्तर
\[a^4 - \frac{1}{b^4}\]
= (a2)2 - 1/(b2)2
= a2- 1/b2a2 + 1/b2
= a - 1/ba + 1/ba2 + 1/b2
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