ГДЗ Алгебра 8 клас Істер (2025)

Спростіть вираз:

1) (7c^3)/(10m^2 ) • (25m^3)/(14c^8 ) = (7c^3 • 25m^3)/(10m^2 • 14c^8 ) = 5m/(4c^5 );
2) –(8a^3)/(27c^4 ) • (45c^5)/(16a^3 ) = –(8a^3 • 45c^5)/(27c^4 • 16a^3 ) = –5c/6;
3) (4c^3)/(15a^8 ) • (–(5a^3)/(8c^4 )) = (4c^3 a^3)/(15a^8 • 8c^4 ) = –1/(6a^5 c);
4) –1/(25p^2 q^7 ) • (–(10p^3 q^7)/11) = (10p^3 q^7)/(25p^2 q^7• 11) = 2p/55.