Home
О нас
Products
Services
Регистрация
Войти
Поиск
BlueSky10
@BlueSky10
July 2022
1
14
Report
Известно,что сумма квадратов корней уравнения ײ-3×+а=0 равна 65. Найдите а.
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
GreatFilter
Verified answer
X²-3x+a=0
Теорема Виета:
x₁+x₂=3
x₁x₂=a
x₁²+x₂²=65
x₁+x₂=3
x₁²+x₂²=65
x₁=3-x₂
(3-x₂)²+x₂²=65
x₁=3-x₂
9-6x₂+x₂²+x₂²=65
x₁=3-x₂
2x₂²-6x₂-56=0
2x²-6x-56=0
x²-3x-28=0
D=(-3)²-4*(-28)=9+112=121=11²
x₁= -4
x₂=7
x₁+x₂=3
x₁x₂=a
-4+7=3
-4*7=-28
x²-3x-28=0
Ответ: а= - 28
6 votes
Thanks 14
More Questions From This User
See All
BlueSky10
August 2022 | 0 Ответы
pomogite pozhalujsta s geometriej01ef2dafb6ee481f9ba2cb8322d1b8e3 93846
Answer
BlueSky10
August 2022 | 0 Ответы
reshite pozhalujsta a pp7gt7p 1 b 8y3y 10lt5y 82 v a 3a 5lt
Answer
BlueSky10
August 2022 | 0 Ответы
najti h po risunkam s formulami
Answer
BlueSky10
August 2022 | 0 Ответы
tex]...
Answer
BlueSky10
August 2022 | 0 Ответы
reshite pozhalujsta ochen nuzhno9ada088035ac7f18c49b5030726811ca 55298
Answer
BlueSky10
July 2022 | 0 Ответы
najdite v predlozhenii lishnee 1v gorode menya prinimali radushno 2pervye vstrech
Answer
BlueSky10
July 2022 | 0 Ответы
3 h4 sm kak najti ostalnye
Answer
BlueSky10
July 2022 | 0 Ответы
prochitajteperlyiz sochinenijperevedite ih na normalnyj russkij yazyk 1v ro
Answer
BlueSky10
July 2022 | 0 Ответы
bissektrisa ugla a parallelogramma avsd peresekaet storonu vs v tochke k vk1
Answer
BlueSky10
July 2022 | 0 Ответы
avsd romb ugol avs 104 gradusa najti ugol sadesli mozhno s risunkomobyasn
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 "Известно,что сумма квадратов корней уравнения ײ-3×+а=0 равна 65. Найдите а..."
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
X²-3x+a=0Теорема Виета:
x₁+x₂=3
x₁x₂=a
x₁²+x₂²=65
x₁+x₂=3
x₁²+x₂²=65
x₁=3-x₂
(3-x₂)²+x₂²=65
x₁=3-x₂
9-6x₂+x₂²+x₂²=65
x₁=3-x₂
2x₂²-6x₂-56=0
2x²-6x-56=0
x²-3x-28=0
D=(-3)²-4*(-28)=9+112=121=11²
x₁= -4
x₂=7
x₁+x₂=3
x₁x₂=a
-4+7=3
-4*7=-28
x²-3x-28=0
Ответ: а= - 28