Home
О нас
Products
Services
Регистрация
Войти
Поиск
vitas74
@vitas74
July 2022
1
15
Report
Известно что a+b-c=3, a-b+c=4 Найдите значение выражени a^2-b^2-c^2+2bc+5a-b+c-3
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
Denik777
Verified answer
(a+b-c)(a-b+c)=a²-(b-c)²=a²-b²-c²+2bc=3·4=12.
(a+b-c)+(a-b+c)=2a=3+4=7 ⇒ a=7/2
-b+c=(a-b+c)-a=4-7/2=1/2
Итак,
(a
²
-b
²
-c
²
+2bc)+5a+(-b+c)-3=12+5
·7/2+1/2-3=12+18-3=27.
0 votes
Thanks 0
More Questions From This User
See All
vitas74
July 2022 | 0 Ответы
srochno algebra 8 klass2a4238f1da99a356f2fcb8e29269b0a3 27864
Answer
vitas74
July 2022 | 0 Ответы
xx5x32 srochnechno
Answer
vitas74
June 2022 | 0 Ответы
funkciya zadaem formuloj y 1 x2 a x05 2 b pri kakih znacheniyah h znachen
Answer
vitas74
October 2021 | 0 Ответы
v kakih organah pishevaritelnoj sistemy proishodit fermentativnoe rassheplenie pi
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 a+b-c=3, a-b+c=4 Найдите значение выражени a^2-b^2-c^2+2bc+5a-b+c-3..."
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
(a+b-c)(a-b+c)=a²-(b-c)²=a²-b²-c²+2bc=3·4=12.(a+b-c)+(a-b+c)=2a=3+4=7 ⇒ a=7/2
-b+c=(a-b+c)-a=4-7/2=1/2
Итак, (a²-b²-c²+2bc)+5a+(-b+c)-3=12+5·7/2+1/2-3=12+18-3=27.