Решить уравнение и неровность и подскажите с какой темы.

1. Alice has already washed the dishes.2. Ally has already watered flowers.   3. Ally has already bought cheese, chips, fruit, juice and lettuce.4. The girls have already made sandwiches.5. The girls have already made toast.6. The mother has already brought cola.  7. Alice has already prepared games.  8. The father has already repaired the DVD player.9. Alice has already swept the paths in the garden.

1)81^(5x+2) <1/99^(10x+4)<9^(-1)10x+4<-110x<-1-410x<-5x<-0,52)(lgx)^2-5lgx+6=0Замена: lgx=tt^2-5t+6=0D=(-5)^2-4*1*6=1t1=(5-1)/2=2t2=(5+1)/2=3Обратная замена:lgx=2; x=10^2=100lgx=3; x=10^3=1000Ответ: 100; 1000