Question

упростите выражение 2a-b/а^2b-4a-5b/ab^2

Answer 1

$2a - \frac{b}{a^2b} -4a - \frac{5b}{ab^2} = -(4a - 2a) - \frac{1}{a^2} - \frac{5}{ab} = -2a - \frac{1}{a^2} - \frac{5}{ab}= \\ \\ = - (2a + \frac{1}{a^2}+ \frac{5}{ab})$