Uprość wyrażenie
[( a⁴-b⁴)/(a²+b²-2ab)]*[(a-b)/(ab+b²)]
[(a²+b²)(a²-b²)/(a+b)²]*[(a-b)/b(a+b)] =[(a²+b²)(a+b)(a-b)/(a-b)²]*[(a-b)/b(a+b)] =[(a²+b²)(a+b)/(a-b)]*[(a-b)/b(a+b)] =(a²+b²)(a+b)/b(a+b) =(a²+b²)/b
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[(a²+b²)(a²-b²)/(a+b)²]*[(a-b)/b(a+b)] =
[(a²+b²)(a+b)(a-b)/(a-b)²]*[(a-b)/b(a+b)] =
[(a²+b²)(a+b)/(a-b)]*[(a-b)/b(a+b)] =
(a²+b²)(a+b)/b(a+b) =
(a²+b²)/b