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-
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)
收起
化简：|a+b|+|b-a|+|2b|
化简|a|+|-b|-|a-b|-|a+b|
化简 |b|-|a|+|a-b|+|a+b|
化简 |a-b|+|a+b|-|a-b|
化简：a-[b-2a-(a-b)]
-2a(a+b)+b(a+b)
化简(2a-b/a+b-b/a-b)除以a-2b/a+b
化简(2a-b/a+b-b/a-b)除以a-2b/a +b
化简：{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)]
化简（2a-b/a+b-b/a-b）÷a-2a/a-b
化简:[2/3a - 2/(a+b) * (a+b/3a - a - b)] / (a-b)/a
(a+b).(a-b)
a/b-b/a
a+b>a-b,
化简|a+b|-|a-b|
(a-b)(-a-b)化简?
a-b>a,a+b
化简a/b(a-b)-b/a(a-b)其中a=3 b=-2