化简a-b/a+b+a+b/a-b-2a2-2b2/a2+b2(a-b/a+b)+(a+b/a-b)-(2a2-2b2/a2+b2)

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化简a-b/a+b+a+b/a-b-2a2-2b2/a2+b2(a-b/a+b)+(a+b/a-b)-(2a2-2b2/a2+b2)

化简a-b/a+b+a+b/a-b-2a2-2b2/a2+b2(a-b/a+b)+(a+b/a-b)-(2a2-2b2/a2+b2)
化简a-b/a+b+a+b/a-b-2a2-2b2/a2+b2
(a-b/a+b)+(a+b/a-b)-(2a2-2b2/a2+b2)

化简a-b/a+b+a+b/a-b-2a2-2b2/a2+b2(a-b/a+b)+(a+b/a-b)-(2a2-2b2/a2+b2)
2(a4+b4)/(a4-b4)

(a-b)/(a+b)+(a+b)/(a-b)-(2a²-2b²)/(a²+b²)
=[(a-b)²+(a+b)²]/[(a+b)/(a-b)] -(2a²-2b²)/(a²+b²)
=(2a²+2b²)/(a²-b²) - (2a²...

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(a-b)/(a+b)+(a+b)/(a-b)-(2a²-2b²)/(a²+b²)
=[(a-b)²+(a+b)²]/[(a+b)/(a-b)] -(2a²-2b²)/(a²+b²)
=(2a²+2b²)/(a²-b²) - (2a²-2b²)/(a²+b²)
=2[(a²+b²)²-(a²-b²)²]/(a的4次幂 -b的4次幂)
=8a²b²/(a的4次幂 -b的4次幂)

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