Question

дарю 10 балов за решение 5/(x – 1) – 3/(x + 1)

Answer 1

$5 div (x - 1) - 3 div (x + 1) = frac{5}{(x - 1)} - frac{3}{(x + 1)} = \ = frac{5(x + 1) - 3(x - 1)}{(x + 1)(x - 1)} = frac{5x + 5 - 3x + 3}{{x}^{2} - 1 } = frac{2x + 8}{ {x}^{2} - 1 }$