Выполни действия: 1) -\dfrac{54a^6b^9}{c^{12}} \cdot \left(-\dfrac{c^{20}}{12a^4b^{15}}\right)= ; 2) \dfrac{98m^8}{p^{17}}:(49m^5p^2)= ; 3) \dfrac{x^2-49}{3x-24}:\dfrac{5x+35}{x-8}= ; 4) \dfrac{5y+20}{y^2-16y+64} \cdot \dfrac{6y-48}{y+4}= .

Задание

Выбери верные ответы

Выполни действия:

\(-\dfrac{54a^6b^9}{c^{12}} \cdot \left(-\dfrac{c^{20}}{12a^4b^{15}}\right)=\) [ \(\frac{9a^2c^6}{2b^8}\) | \(\frac{9a^2c^8}{2b^6}\) | \(-\frac{9a^2c^8}{2b^6}\) | \(\frac{9a^4c^8}{2b^2}\) ];
\(\dfrac{98m^8}{p^{17}}:(49m^5p^2)=\) [ \(\frac{2m^3}{p^{19}}\) | \(2m^{13}p^{19}\) | \(\frac{2m^4}{p^2}\) | \(\frac{2m^{10}}{p^2}\) ];
\(\dfrac{x^2-49}{3x-24}:\dfrac{5x+35}{x-8}=\) [ \(\frac{x-7}{15}\) | \(\frac{15}{x-7}\) | \(\frac{15(x+7)}{x+7}\) | \(\frac{x-7}{15(x+7)}\) ];
\(\dfrac{5y+20}{y^2-16y+64} \cdot \dfrac{6y-48}{y+4}=\) [ \(\frac{30}{y+4}\) | \(\frac{30(y+4)}{y-8}\) | \(\frac{30(y-8)}{y+4}\) | \(\frac{30}{y-8}\) ].