Question

the value of expression (1+x) (1+x2) (1+x4) (1-x) is?

Answer 1

Hi friend.....
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Here's your answer.....
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(1+x) (1+x²) (1+x⁴) (1-x)

=(1+x) (1-x) (1+x²) (1+x⁴)

= (1-x²) (1+x²) (1+x⁴)

= (1-x⁴) (1+x⁴)

=(1-x^8)

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Answer 2

={(1+x)(1-x)}×{(1+x^2)(1+x^4)}
=(1^2-x^2)×(1+x^4+x^2+x^6)
=1-x^2×(1+x^2+x^4+x^6)
=1+x^2+x^4+x^6-x^2-x^4-x^6-x^8
=1-x^8(ans)