Предмет: Алгебра, автор: Raptor007

Ребзяяяяя срочняк помогите плеееес!!!только решение роспишите подробно.умоляю.
Решите уровнение:x^2(x+2)-(x+2)(x^2-x+3)=0

Ответы

Автор ответа: Xxx1XXX1xxX
0
х1=-2
х2=-корень из 3
х3=корень из 3
Автор ответа: Xxx1XXX1xxX
0
ок ща
Автор ответа: Xxx1XXX1xxX
0
х*3+2х-х-2умножить х-х+3=0
Автор ответа: Xxx1XXX1xxX
0
х*3+2х-х*2+х*2=2-3
Автор ответа: Xxx1XXX1xxX
0
х+3х=-1
Автор ответа: Xxx1XXX1xxX
0
х(1+3)=-1
Автор ответа: nadelyaev2002
0
x^2(x+2)-(x+2)(x^2-x+3)=0
(x+2)(x^2-x^2+x-3)=0
(x+2)(x-3)=0
x^2-3x+2x-6=0
x^2-x-6=0
Решим его с помощью дискриминанта, которые есть b^2-4ac и для данного квадратного уравнения равен (-1)^2-4*1*(-6)=1-(-24)=1+24=25. Мы видим, что D>0, значит, уравнение имеет два корня: x_{1-2}= frac{-bбsqrt{25}}{2*1}= frac{1б5}{2}
x_1= frac{1-5}{2}= frac{-4}{2}=-2;
x_2= frac{1+5}{2}= frac{6}{2}=3;
Ответ:-2;3
Автор ответа: nadelyaev2002
0
))
Автор ответа: Xxx1XXX1xxX
0
ответ не верный
Автор ответа: Xxx1XXX1xxX
0
у меня есть программа там ответ другой получился, но она мне не выдала решения
Автор ответа: nadelyaev2002
0
Странная программа какая-то.
Автор ответа: nadelyaev2002
0
x+2=0 или x-3=0. Вот как по-другому можно было)
Похожие вопросы
Предмет: Английский язык, автор: sophiasaliuk12
Use the correct tense form.
1. The plant _____ many different machines for farmers.
a) produce; b) produces; c) is producing.
2. The factory _____ to a Japanese company.
a) is belonging; b) is belonged; c) belongs.
3. Two companies _____ in the market now.
a) compete; b) are competing; c) competed.
4. Trade between the two countries _____ well last year.
a) will develop; b) was developing; c) developed.
5. Ukraine’s economy _____ fast in the 1990s.
b) didn’t grow; c) will not grow; a) doesn’t grow;
6. Britain ____ the world’s fifth largest trading nation in 2000.
a) is; b) will be; c) was.
7. I ____ study economies last year.
a) was not; b) don’t; с) didn’t.
8. When she ____ a new labour contract, she found it necessary to increase wages.
a) reads; b) read; c) was reading.
9. The secretary said Mr. Baker ____ and appointment by phone.
a) will make; b) had made; c) has made.
10. The executive manager ____ the contract by the time we came to the office.
a) had signed; b) signed; c) signs.
11. There students ____ economists in five year.
a) shall become; b) become; c) will become.
12. Such a situation ____ by economists long ago.
a) was predicted; b) is predicted; c)will be predicted.
13. A high living standard ___ in Ukraine yet.
a) has reached; b) hasn’t been reached; c) has been reached.
14. Prices ___ by the government next year.
a) will be increased; b) are increased; c) increased.
15. Too little money ___ by the government on roads during last year.
a) were spent; b) was spent; c) will be spent.
16. We ___ that contract if we had make a better offer.
a) had won; b) would win; c) would have won.
17. If my train isn’t late, I ___ in Paris at six.
a) shall be; b) would be; c) am.
18. If I ___ more shares. I would have become rich.
a) have; b) had bought; c) have bought.
19. I wouldn’t worry if I ___ you.
a) was; b) am; c) were.
20. We _____ the new job if they had offered it to you.
a) would have accepted; b) accept; c) accepted.