Question

Помогиииите!!!
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Answer 1

$frac{a-2}{a+1}- frac{5}{(a+1)^2}: frac{5}{a^2-1} - frac{3a+2}{a+1} = \ frac{a-2}{a+1}- frac{5}{(a+1)(a+1)}* frac{(a+1)(a-1)}{5} - frac{3a+2}{a+1} = \ frac{a-2}{a+1}- frac{a-1}{(a+1)} - frac{3a+2}{a+1} = \ frac{a-2-a+1-3a-2}{a+1} = frac{-3a-3}{a+1}$