Предмет: Алгебра, автор: Аноним

(x-12)(x+2)-(x+4)(x-4)=32

Ответы

Автор ответа: NochnayaArhideya
23
(х-12)(х+2)-(х+4)(х-4)=32
х²+2х-12х-24-(х²-16)-32=0
х²-10х-24х-х²+16-32=0
-10х-40=0
-10х=40
х= -4
Автор ответа: svetazuna
4
х^2+2х-12х-24-х^2+16=32, -10х = 32-16+24 -10х = 40, х = - 4
Интересные вопросы
Предмет: Русский язык, автор: Алинка45итолько
Предмет: Английский язык, автор: Animation5756
Примерный лексико-грамматический тест
1. Whose phone is this? – It’s … .
a) my b) me c) mine
2. … Greens have lived here for fifteen years.
a) - b) the c) a
3. My sister Jane is afraid of … .
a) mouse b) mouses c) mice
4. There aren’t many boys in your class, … ?
a) are they b) are there c) aren’t they
5. We went to the Black Sea … July.
a) on b) in c) at
6. The news … very good! Tom has recovered!
a) are b) were c) is
7. How … meals a day do you have?
a) many b) much c) lots of
8. Are there … sweets left?
a) some b) no c) any
9. Sam usually goes to the swimming pool … Sunday.
a) in b) on c) at
10. They … a new car but I … it yet.
a) bought, don’t see b) had bought, didn’t see c) have bought, haven’t seen
11. Mary … her friends once a meek.
a) meet b) met c) meets
12. If you … me on the weekend, we …a picnic.
a) will visit , shall have b) visit, shall have c) visit, have
13. Yesterday my brother … TV as he … very busy.
a) didn’t watched; was b) didn’t watch, were c) didn’t watch, was
14. Don’t bother her, she … over the telephone.
a) is talking b) talking c) always talks
15. His elder sister … 16 years old next month.
a) was b) has been c) will be
16. Michael is … boy in our class.
a) a smart b) the smartest c) the most smart
17. We … English for 7 years.
a) learn b) has learned c) have been learning
18. Sam … absent yesterday, … ?
a) were, weren’t he b) was, wasn’t he c) was, wasn’t it
19. There … no bread left. Could you buy …?
a) are, any b) is, any c) is, some
20. I don’t need your help. I can do it … .
a) myself b) itself c) myselve