Home
О нас
Products
Services
Регистрация
Войти
Поиск
sonyasha2015
@sonyasha2015
July 2022
1
3
Report
7x^2-16x-15=0. Помогите решить)
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
alexooooon
7x^2 - 16x - 15 = 0;
D = b^2 - 4ac;
D = -16^2 - 4 * 7 * (-15);
D = 256 + 420 = 676;
D > 0, два корня!
x1,2 = (-b ± √D)/2a;
x1:x = (16 + 26)/2*7;
x = 42/14;
x = 3;
x2:x = (16 - 26)/2*7;
x = -(10/14);
x = -(5/7);
Ответ: 3; -(5/7).
3 votes
Thanks 4
More Questions From This User
See All
sonyasha2015
August 2022 | 0 Ответы
pomogite reshit zadachu na polu pod linoleumom prolozhen pryamoj izolirovannyj pro
Answer
sonyasha2015
August 2021 | 0 Ответы
v treugolnike avs ugol s90 as2koren6 av5najdite sina
Answer
sonyasha2015
August 2021 | 0 Ответы
na kletchatoj bumage s kletkami razmerom 1smh1sm izobrazhen chetyrehugolnik najdi
Answer
sonyasha2015
July 2021 | 0 Ответы
dayu 26 ballovpozhalujsta pomogite reshite hotya by odno zavtra itogovaya po h
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 "7x^2-16x-15=0. Помогите решить)..."
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
D = b^2 - 4ac;
D = -16^2 - 4 * 7 * (-15);
D = 256 + 420 = 676;
D > 0, два корня!
x1,2 = (-b ± √D)/2a;
x1:x = (16 + 26)/2*7;
x = 42/14;
x = 3;
x2:x = (16 - 26)/2*7;
x = -(10/14);
x = -(5/7);
Ответ: 3; -(5/7).