a^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之a

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a^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之aa^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之aa^4+a^3b-4a^2b^2+ab^3+b^

a^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之a
a^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之a

a^4+a^3b-4a^2b^2+ab^3+b^4=0,求a分之b+b分之a
a^4+a^3b-4a^2b^2+ab^3+b^4=0,(a^4-2a^2b^2+b^4)-2a^2b^2+a^3b+ab^3=0 (a^2-b^2)^2+(-2a^2b^2+a^3b+ab^3)=0 a^2=b^2 -2a^2b^2+a^3b+ab^3=0 a/b+b/a=1