Question

ayúdeme por favor ;'(

Answer 1

$log( {a}^{2} - 1 ) - log(a + 1) \\ = log( \frac{ {a}^{2} - 1 }{a + 1 }) \\ = log( \frac{(a + 1)(a - 1)}{(a + 1)} ) \\ = log(a - 1)$
$log(36) = log(9 \times 4) \\ = log( {3}^{2} \times {2}^{2} ) \\ = 2 log(3) + 2 log(2) = 2a + 2b = 2(a + b)$