8(a+b)/2(a²-b²)
8(a + b)
----------------
2(a² - b²) ===> veja (a² - b²) = (a - b)(a + b)
---------------- elimina AMBOS (a + b)
2(a - b)(a + b)
8
---------------- e (8 : 2 = 4)
2(a - b)
4
------------
(a - b)
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8(a+b)/2(a²-b²)
8(a + b)
----------------
2(a² - b²) ===> veja (a² - b²) = (a - b)(a + b)
8(a + b)
---------------- elimina AMBOS (a + b)
2(a - b)(a + b)
8
---------------- e (8 : 2 = 4)
2(a - b)
4
------------
(a - b)