How can you factor x^4 1? I need to factor by difference of squares. How can I do

QuestionsCategory: CalculusHow can you factor x^4 1? I need to factor by difference of squares. How can I do
Brendan Elliott asked 3 weeks ago
How can you factor x^4 +1?

I need to factor by difference of squares. How can I do this?

change it to

x^4 – (sqrt(-1))^2 or
x^4 – i^2

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