Home
О нас
Products
Services
Регистрация
Войти
Поиск
agasikkk
@agasikkk
July 2022
1
26
Report
х-корень уравнения
[tex]7* 49^{x} +5* 14^{x} =2* 4^{x} [/tex]
найдите х²
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
IUV
Verified answer
7*49^x+5*14^x=2*4^x
7*((7/2)^x)^2+5*(7/2)^x -2=0
(7/2)^x=t>0
7*t^2+5*t -2=0
d=25+4*2*7=81
t1=(-5-9)/14=-1 - лишний корень
t2=(-5+9)/14=4/14=2/7
(7/2)^x=2/7=(7/2)^(-1)
x=(-1)
x^2 = 1
3 votes
Thanks 5
More Questions From This User
See All
agasikkk
August 2022 | 0 Ответы
zadanie vo vlozheniibb3279c9822240934b3ce8b338fa5af6 28913
Answer
agasikkk
August 2022 | 0 Ответы
legkaya zadacha
Answer
agasikkk
August 2022 | 0 Ответы
napisat tekst menin denisovka
Answer
agasikkk
August 2022 | 0 Ответы
3 v odnoj probirke r r formaldegida vo vtoroj r r glicerina s pomoshyu od
Answer
agasikkk
August 2022 | 0 Ответы
iz kruglogo brevna diametrom 40 sm na pilorame vyrezali pryamougolnuyu shpalurazm
Answer
agasikkk
August 2022 | 0 Ответы
reshit zadachu vo vlozhenii 121 s obyasneniem i s chertezhomesli on nuzhen
Answer
agasikkk
August 2022 | 0 Ответы
storony treugolnika ravny 51 30 i 27 sm iz vershiny menshego ugla treugolnika44f1333fc4b6e662df8a41750cbce2c3 45072
Answer
agasikkk
August 2022 | 0 Ответы
pravilno li otmetili u tangensa gde budut nahoditsya znacheniya
Answer
agasikkk
August 2022 | 0 Ответы
zadanie vnutriprimer legkij
Answer
agasikkk
August 2022 | 0 Ответы
zadanie vnutriotvet vrode d
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 "tex] найдите х²..."
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
7*49^x+5*14^x=2*4^x7*((7/2)^x)^2+5*(7/2)^x -2=0
(7/2)^x=t>0
7*t^2+5*t -2=0
d=25+4*2*7=81
t1=(-5-9)/14=-1 - лишний корень
t2=(-5+9)/14=4/14=2/7
(7/2)^x=2/7=(7/2)^(-1)
x=(-1)
x^2 = 1