at our lessons we answer the teacher's questions.
in england they don't go to school every day.
i do my homework in my bedroom.
the pupils on duty tidy the classroom.
all the pupils have to wear uniforms.
i come to school at a quarter to eight.
we like to make reports.
i do me homework every day.
i have my music lessons two times a week.
we have english three times a week.
this magazine is published to times a month.
i visit my aunt three times a month.
i never miss classes.
i go to the forest very often.
they seldom go to the theatre.
10x²-x-2=0 D=81 √D=9
x₁,₂=(1+/-9)/20
x₁=0,5 x₂=-0,4
ответ: x₁=0,5 x=-0,4