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# Which of the following is equivalent to (x + y)(x^2 + y^2)(x^4 + y^4)

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Re: Which of the following is equivalent to (x + y)(x^2 + y^2)(x^4 + y^4) [#permalink]
Bunuel wrote:
Which of the following is equivalent to $$(x + y)(x^2 + y^2)(x^4 + y^4)(x - y)$$?

A. x - y
B. x^2 - y^2
C. x^4 - y^4
D. x^8 - y^8
E. x^8 - 4x^2y^2 + y^8

Dear Moderator,
While going through the DS section of Algebra, found this PS question. Hope you will do the needful. Thank you.
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Re: Which of the following is equivalent to (x + y)(x^2 + y^2)(x^4 + y^4) [#permalink]
(x+y) (x-y) (x^2 + y^2) (x^4 + y^4)
= (x^2 - y^2) (x^2 + y^2) (x^4 + y^4)
= (x^4 - y^4) (x^4 + y^4)
= (x^8 - y^8)
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Re: Which of the following is equivalent to (x + y)(x^2 + y^2)(x^4 + y^4) [#permalink]
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Re: Which of the following is equivalent to (x + y)(x^2 + y^2)(x^4 + y^4) [#permalink]
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