Выполни деление алгебраических дробей. \dfrac{x^2-49}{x^2-x}:\dfrac{x^2+7x}{x^2-1}= {\dfrac{x^2-49}{x^2-x}\mathrlap{\:\cdot}} {\cdot~\dfrac{x^2-1}{x^2+7x}} \mathrlap{\:=} \mathrlap{\:=} . \dfrac{2,5x^2-2,5y^2}{x^2+ax}:\dfrac{5x-5y}{x+a}= .

Задание

Заполни пропуски

Выполни деление алгебраических дробей.

\(\dfrac{x^2-49}{x^2-x}:\dfrac{x^2+7x}{x^2-1}=\) \({\dfrac{x^2-49}{x^2-x}\mathrlap{\:\cdot}}\) \({\cdot~\dfrac{x^2-1}{x^2+7x}}\) \(\mathrlap{\:=}\) [ ] \(\mathrlap{\:=}\) [ ].
\(\dfrac{2,5x^2-2,5y^2}{x^2+ax}:\dfrac{5x-5y}{x+a}=\) [ ].