(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b计算,

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(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b计算,
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(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b计算,
(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b计算,

(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b计算,
(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b
=(a+b)/(a²-b²)-(a-b)/(a²-b²)+2b/(a²+b²)
=(a+b-a+b)/(a²-b²)+2b/(a²+b²)
=2b[1/(a²-b²)+1/(a²+b²)]
=2b(a²+b²+a²-b²)/(a^4-b^4)
=2a²b/(a^4-b^4)

1 1 2b
——— - ——— + ——————
a - b a+b a^2+b^2
(a+b) -(a - b) 2b
= ————————— + ——————
(a - b)(a+b) ...

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1 1 2b
——— - ——— + ——————
a - b a+b a^2+b^2
(a+b) -(a - b) 2b
= ————————— + ——————
(a - b)(a+b) a^2+b^2
2b 2b
= ————— + ——————
a^2- b^2 a^2+b^2
2b(a^2- b^2+a^2+b^2)
= ———————————
(a^2- b^2)(a^2+b^2)
2b X 2a^2
= ——————
a^4- b^4
4 a^2 b
= ——————
a^4- b^4

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(a-b)分之1-(a+b)分之1+(a^2+b^2)分之2b
=(a+b)/(a²-b²)-(a-b)/(a²-b²)+2b/(a²+b²)
=(a+b-a+b)/(a²-b²)+2b/(a²+b²)
=2b[1/(a²-b²)+1/(a²+b²)]
=2b(a²+b²+a²-b²)/(a^4-b^4)
=2a²b/(a^4-b^4)

(a-b)/1-(a+b)/1+(a^2+b^2)/2b
=(a+b)/(a²-b²)-(a-b)/(a²-b²)+2b/(a²+b²)
=(a+b-a+b)/(a²-b²)+2b/(a²+b²)
=2b[1/(a²-b²)+1/(a²+b²)]
=2b(a²+b²+a²-b²)/(a^4-b^4)
=2a²b/(a^4-b^4)
希望采纳,谢谢O(∩_∩)O谢谢