-6a^b-3a^3-3ab^2因式分解(x^2+y^2)^2-4x^2y^2

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-6a^b-3a^3-3ab^2因式分解(x^2+y^2)^2-4x^2y^2
-6a^b-3a^3-3ab^2因式分解
(x^2+y^2)^2-4x^2y^2

-6a^b-3a^3-3ab^2因式分解(x^2+y^2)^2-4x^2y^2
-6a^2b-3a^3-3ab^2
=-3a(2ab+a^2+b^2)
=-3a(a+b)^2
(x^2+y^2)^2-4x^2y^2
=(x^2+y^2-2xy)(x^2+y^2+2xy)
=(x-y)^2(x+y)^2

-6a^2b-3a^3-3ab^2
=-3a(a²+2ab+b²)
=-3a(a+b)²
(x^2+y^2)^2-4x^2y^2
=(x²+2xy+y²)(x²-2xy+y²)
=(x+y)²(x-y)²