Question

Помогите пожалуйста
lg(4x)+lgx<=2​

Answer 1

lg4x + lgx <= 2

lg4 + lgx + lgx <= 2

2lgx <= 2-2lg2

lgx <= 1-lg2

lgx <=lg10 - lg2

lgx <= lg5

{x <= 5

{x > 0

x€(0; 5]