Предмет: Алгебра, автор: valeriaalsevska

Помогите пожалуйста решить
(X-2)(4x+8)=0

Ответы

Автор ответа: Аноним

0

$(x-2)(4x+8)=0 \\ 4(x-2)(x+2)=0 \\ x_1=2; x_2=-2$

Автор ответа: Аноним

0

(x-2(4x+8)=0
4x²+8x-8x-16=0
4x²-16=0
4x²=16
x²=4
x=±2

x=2
x=-2

Ответ: х=-2;2

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: kykyryza07

Put the verbs into the correct tense. 1. When Mel told his classmates / colleagues / nephews that he was leaving the company, they decided to buy him a going-away present. 2. Nadia is so stubborn / sociable/reliable! She never listens to anyone, and does whatever she wants. 3. Dinosaurs became dead / disappeared / extinct about 65 million years ago. 4. Can you give / catch / take me a lift to the office? My car has broken down. 5. If I had more time, I would take / will take / took karate lessons. 6. Alan said that he will / is going to / would help us move house next week. 7. You can/must / may wear a uniform at school. 8. Olivia isn't as sociable than / more sociable as / sociable as her older sister. 9. This picture was painted / had painted / painted at the beginning of the century. 10. You will get higher marks if you study / will study / would study more. 11. Nathan is very / too / enough selfish to care about what other think of him. 12. My father tells the funnier / funniest/most funny jokes I've ever heard. 13. I didn't mean hurt/hurting / to hurt you. I was just in a bad mood. 14. My mum says she'll never forget to meet / she met / meeting my dad for the first time. 15. Mrs. Smith speaks more slowly / slower / the most slowly than anyone I know. 16. What time does the train arrive / get / reach Bristol? 17. Mark said that he had had / would have / has had a great time in London the previous summer.
ПОМОГИТЕ ПОЖАЛУЙСТА, КР.

6 лет назад

Предмет: Алгебра, автор: eustus4172

2. [3] Какое из следующих чисел есть среди членов данной арифметической прогрессии: 3; 6; 9; 12:...? 1) 85 3) 100 2) 98 4) 105

6 лет назад

Предмет: Физика, автор: Artemddd56

у кімнаті об'ємом 60м^3 температура підвищилася 280 до 300К . На скільки змінилася маса повітря в кімнаті, якщо атмосферний тиск становить 1,01×10^5 Па

6 лет назад

Предмет: Математика, автор: Аноним

Пловец по течению быстрой реки проплыл 120 м. Когда же он поплыл против течения, то за такое же время его снесло течением на 40 м ниже по течению. Во сколько раз скорость течения реки больше скорости пловца?

9 лет назад

Предмет: Математика, автор: diana3557

помогите пожалуйста (1,2) способом подстановки

9 лет назад