Question

Сократите дробь:а)y^2+y/y^2. b)a^2-2a/a^2-4

Answer 1

$\frac{y(y + 1)}{{y}^{2} } = \frac{y + 1}{y}$
$\frac{a(a - 2)}{(a - 2)(a + 2)} = \frac{a}{a + 2}$