Предмет: Математика, автор: murillo1601

Упростить выражение 3a^{2} - (a-3(a+3)

Ответы

Автор ответа: shvabov10L

3a^2-a^2-9=2a^2-9

для начала мы раскрывает скобки и получаем выражение,которое вскоре приобретает конечный вид

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: bruh33409

I haven't prepared for it yet.
Составьте все виды вопросов.

7 лет назад

Предмет: Литература, автор: ekaterinarogalina5

Кто из поэтов устроил поэтическое соревнование и написал сказки на сюжет спящей красавицы?
Выберите один ответ:

Тургенев и Толстой

Пушкин и Жуковский

Гоголь и Лермонтов

7 лет назад

Предмет: Английский язык, автор: sokolenkozena5

The Past Perfect Continuous Tense
Complete the sentences below with the correct forms of the verbs in brackets.
1. I ________ (wait) for you for an hour before you called and said that you wouldn't come. 2. She looked very tired. She _______ (run) for 2 hours
3. When the mother came home Nick woke up. He ________ (sleep) for 4 hours.
4. The children ______ (play) in the yard for an hour and a half when it _______ (start) snowing.
5. My grandfather found his glasses at last. He _____ (look) for them for twenty minutes.
6. He had to go and see a dentist. His tooth ______ (ache) for a week.
7. Ann finished her report. She _______ (make) it for three days.
8. Poll ______ (learn) English for ten years before he entered the University.
9. The child ________ (paint) for a long time when his mother entered the room.
10. Mr. Brown ______ (work) for 50 years when he finally retired.
11. He ______ (eat) his lunch for an hour until his boss ________ (call) him and ________ (ask) him to come immediately.
12. When she _______ (come) in, we __________ (see) that her clothes ________ (be) dirty. We knew that she _______ (repair) her car for three hours.
13. At last Andrew had his qualification. He _______ (preparing) for the exams
for six months.
14. My young daughter felt very proud that she _____ (cook) an apple pie. She _______ (cook) it for three hours!
15. We ______ (look) for the coffee bar for half an hour when we _______ (meet) Melissa and she ______ (show) us the way.
16. Before I ______ (buy) a new car I _______ (work) overtime for several months.
17. The fans were disappointed because they _______ (wait) for their favourite actor for three hours but he _______ (not/appear).
Допоможіть!!!

7 лет назад

Предмет: Литература, автор: алёна134567

ПОЧЕМУ ТАРАС ВЕЗЁТ СЫНОВЕЙ В ЗАПОРОЖСКУЮ СЕЧЬ? СРОЧНО НУЖНО ПРЯМО СЕЙЧАС ОЧЕНЬ НАДО

10 лет назад

Предмет: Математика, автор: тарасик920

виконайте ділення 12180:42

10 лет назад