Home
О нас
Products
Services
Регистрация
Войти
Поиск
1CheshireCat1
@1CheshireCat1
July 2022
1
15
Report
Сканави номер 6.144 помогите
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
Эксперт5
Verified answer
(x²+2x)²-(x+1)²=55
(x²+2x)²-(x²+2x+1)=55
(x²+2x)²-[(x²+2x)+1]=55
Замена: y=x²+2x
y²-(y+1)=55
y²-y-1-55=0
y²-y-56=0
По теореме Виета: y₁*y₂=-56 и y₁+y₂=1 => y₁=-7; y₂=8
Обратная замена:
x²+2x=-7 x²+2x=8
x²+2x+7=0 x²+2x-8=0
D=2²-4*1*7=4-28=-24<0 x₁*x₂=-8 и x₁+x₂=-2 =>
Решений нет => x₁=2 и x₂=-4
Ответ: -4 и 2
1 votes
Thanks 2
More Questions From This User
See All
1CheshireCat1
August 2022 | 0 Ответы
pomogite pliz reshit 6256i6254
Answer
1CheshireCat1
August 2022 | 0 Ответы
skanavi nomer 6256 pozhalujsta
Answer
1CheshireCat1
August 2022 | 0 Ответы
skanavi nomer 2138 pomogite pozhalujsta
Answer
1CheshireCat1
July 2022 | 0 Ответы
nomer 6144 i 6147 iz sbornika skanavi
Answer
1CheshireCat1
July 2022 | 0 Ответы
skanavi zadanie nomer 6 024
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "Сканави номер 6.144 помогите..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
(x²+2x)²-(x+1)²=55(x²+2x)²-(x²+2x+1)=55
(x²+2x)²-[(x²+2x)+1]=55
Замена: y=x²+2x
y²-(y+1)=55
y²-y-1-55=0
y²-y-56=0
По теореме Виета: y₁*y₂=-56 и y₁+y₂=1 => y₁=-7; y₂=8
Обратная замена:
x²+2x=-7 x²+2x=8
x²+2x+7=0 x²+2x-8=0
D=2²-4*1*7=4-28=-24<0 x₁*x₂=-8 и x₁+x₂=-2 =>
Решений нет => x₁=2 и x₂=-4
Ответ: -4 и 2