Q. 5 C4.0( 4 Votes )

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Answer :

Applying the formula (a + b)(a - b) = a2 - b2 on first two terms

(x – 1)(x + 1)(x2 + 1)(x4 + 1) = (x2 - 1) (x2 + 1)(x4 + 1)

Applying the formula (a + b)(a - b) = a2 - b2 again

(x – 1)(x + 1)(x2 + 1)(x4 + 1) = (x4 - 1)(x4 + 1)

Applying the formula (a + b)(a - b) = a2 - b2 again

(x – 1)(x + 1)(x2 + 1)(x4 + 1) = (x8 - 1)

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