02 jun 2013, 01:05
Não consigo resolver essa questão

- jhg.jpg (4.46 KiB) Visualizado 1568 vezes
02 jun 2013, 01:57
\(\frac{(x^2 - 9)(x + 1)}{x^2 - 2x - 3} =\)
\(\frac{(x + 3)(x - 3)(x + 1)}{(x - 3)(x + 1)} =\)
\(\fbox{x + 3}\)
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