Сократите дробь:
а) $\frac{x^2 - xy}{x^2y - xy^2}$;
б) $\frac{pq^4 - cq^4}{cq^3 - pq^3}$;
в) $\frac{ma^2 - m^2a}{m^2 - ma}$;
г) $\frac{2nd^4 - 4pd^4}{3nd^3 - 6pd^3}$.
$\frac{x^2 - xy}{x^2y - xy^2} = \frac{x(x - y)}{xy(x - y)} = \frac{1}{y}$
$\frac{pq^4 - cq^4}{cq^3 - pq^3} = \frac{q^4(p - c)}{q^3(c - p)} = -\frac{q^4(p - c)}{q^3(p - c)} = -q$
$\frac{ma^2 - m^2a}{m^2 - ma} = \frac{ma(a - m)}{m(m - a)} = -\frac{ma(m - a)}{m(m - a)} = -a$
$\frac{2nd^4 - 4pd^4}{3nd^3 - 6pd^3} = \frac{2d^4(n - 2p)}{3d^3(n - 2p)} = \frac{2d}{3}$
Пожауйста, оцените решение
