Предмет: Алгебра, автор: stilleruheart

3^2x-2+3^2x=30
решите досконально желательно​

Ответы

Автор ответа: 01kyu
1
1)Выносим общий множитель (1+3^2)*3^2x-2=30
2)10*3^2x-2=30
3)Сокращаем и получаем 3^2x-2=3^1
4)Получаем, что 2x-2=1 -> 2x=3 -> x = 1,5
Похожие вопросы
Предмет: Окружающий мир, автор: воваверемеев
Предмет: Английский язык, автор: elyamadiarova
2.Put the verbs in the Present Simple form.

One fly_____________ (to fly) , two flies _____________ (to fly).
One girl _____________ (to cry), four girls _____________ (to cry).
When a wolf _____________ (to see) the moon, it _____________ (to begin) to howl (выть).
Wolves and sheep _____________ (to be) never friends.
Our hens _____________ (to lay [откладывать]) a lot of eggs.
Boys _____________ (to fight) and_____________ (to shout).
That boy _____________ (to try) to catch some balls.
These girls _____________ (to try) to run away from an angry turkey.
If one goose _____________ (to have) one tooth, how many teeth _____________ (to have) thirteen geese?

3.Вставьте глаголы из скобок в форме Present Simple.
Yan is at a summer camp in Poland. Write what he usually does in the camp. Put the verbs in bracket in the correct form. He ________ (get) up at 7. He ________ (have) his English lesson every day. Не ________   (speak) English to his friends. He   ________  (play) board games in the afternoon. Sometimes he  ________  (swim) in the lake. He often  ________ (go) hiking. He sometimes  ________ (sit) by the camp fire in the evenings. He never  ________ (go) on a trip without his friends.

4. Вставьте глаголы в Present Simple. Put the verbs in the present form.
go, like, love,  watch,  read,  like, walk,  come,  do,  watch 
My name's Pavel. In the evening I usually (1) ___________ my homework. Then I (2) ___________  TV or video. I (3) ___________  action films! They are super! Then I  (4) ___________ my  dog.  After  that I  (5)  ___________ home, (6) ___________  a book and (7) ___________  to  bed. My sister is little. She doesn't  (8) ___________ action films. She (9) ___________ cartoons. She (10) ___________  them  every  day.  





Предмет: Математика, автор: Ученик99999999лол