因式分解:x^4-y^4

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因式分解:x^4-y^4
因式分解:x^4-y^4

因式分解:x^4-y^4
x^4-y^4
=(x²-y²)(x²+y²)
=(x-y)(x+y)(x²+y²)

x^4-y^4=(x^2+y^2)(x^2-y^2)=(x^2+y^2)(x+y)(x-y)

x^4-y^4
=(x^2)^2-(y^2)^2
=(x^2-y^2)(x^2+y^2)
=(x^2+y^2)(x-y)(x+y)

- -!
(x²+y²)(x+y)(x-y)