(2,7t+4,5)(7t+6)=18,9t^2+31,5t+16,2t+27=18,9t^2+47,7t+27
1)2,7t*7t=18,9t^2
2)4,5*7t=31,5t
3)2,7t*6=16,2t
4)4,5*6=27
Объяснение:
(2,7t+4,5)(7t+6)=18,9t^2+31,5t+16,2t+27=18,9t^2+47,7t+27
1)2,7t*7t=18,9t^2
2)4,5*7t=31,5t
3)2,7t*6=16,2t
4)4,5*6=27
Объяснение: