Question

ПОМОГИТЕ СРОЧНО! ДАЮ 10 БАЛОВ!!!!!!​

Answer 1

Ответ:

$frac{ {a}^{2} }{(a - 1)(a + 1)} - frac{a}{a + 1} = frac{ {a}^{2} : - a(a - 1) }{(a - 1)(a + 1)} = frac{ {a}^{2} - {a}^{2} + a}{ {a}^{2} - 1} = frac{a}{ {a}^{2} - 1} = frac{ {1.5}^{2} }{ {1.5}^{2} - 1} = frac{ {1.5}^{2} }{0.5 times 2.5} = frac{1.5 times 1.5}{0.5 times 2.5} = frac{15 times 15}{5 times 25} = frac{45}{25} = frac{9}{5} = 1 frac{4}{5}$