化简a/a-b - b-a+b + 2ab/a²-b²
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化简a/a-b-b-a+b+2ab/a²-b²化简a/a-b-b-a+b+2ab/a²-b²化简a/a-b-b-a+b+2ab/a²-b²a
化简a/a-b - b-a+b + 2ab/a²-b²
化简a/a-b - b-a+b + 2ab/a²-b²
化简a/a-b - b-a+b + 2ab/a²-b²
a/(a-b) - b/(a+b) + 2ab/(a²-b²)
=a(a+b)/(a+b)(a-b)-b(a-b)/(a+b)(a-b)+2ab/(a+b)(a-b)
=(a²+ab-ab+b²+2ab)/(a+b)(a-b)
=(a²+2ab+b²)/(a+b)(a-b)
=(a+b)²/(a+b)(a-b)
=(a+b)/(a-b)
化简:a-[b-2a-(a-b)]
化简:|a+b|+|b-a|+|2b|
化简(2a-b/a+b-b/a-b)÷a-2a/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:[2/3a - 2/(a+b) * (a+b/3a - a - b)] / (a-b)/a
化简|a|+|-b|-|a-b|-|a+b|
化简 |b|-|a|+|a-b|+|a+b|
化简 |a-b|+|a+b|-|a-b|
-2a(a+b)+b(a+b)
化简a/b(a-b)-b/a(a-b)其中a=3 b=-2
化简|a+b|-|a-b|
(a-b)(-a-b)化简?
(a+b).(a-b)
a/b-b/a
a+b>a-b,
(a+2b)(a-2b)+(a-b)(a+b)-2(a-3b)(a-b)