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प्रश्न
Factorize each of the following expression:
x4 − 1
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उत्तर
\[x^4 - 1\]
\[ = ( x^2 )^2 - 1\]
\[ = ( x^2 + 1)( x^2 - 1)\]
\[ = ( x^2 + 1)(x + 1)(x - 1)\]
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