Home
О нас
Products
Services
Регистрация
Войти
Поиск
HELPME986
@HELPME986
August 2022
1
4
Report
а) x(x+3)-4(x-5)=7(x+4)-8 решите уравнение
..пожалуйста поэтапно!
б) 2x^4-9x^2+4=0(а здесь через t)
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
Rechnung
Verified answer
а) x(x+3)-4(x-5)=7(x+4)-8
x²+3x-4x+20=7x+28-8
x²-x+20=7x+20
x²-x-7x+20-20=0
x²-8x=0
x(x-8)=0
х=0 или х-8=0
х=8
Ответ: 0; 8
б) 2x^4-9x^2+4=0
t=x²
2t²-9t+4=0
D=(-9)²-4*2*4=81-32=49=7²
t1=(9+7)/4=4
t2=(9-7)/4=1/2
x²=4 x²=1/2
x1=2 x2=-2 x3=√1/2=√2/2 x4=-√1/2=-√2/2
2 votes
Thanks 7
More Questions From This User
See All
HELPME986
August 2022 | 0 Ответы
axx3 4x 57x4 8 reshite uravnenie pozhalujsta poetapnob 2x4 9x24
Answer
HELPME986
August 2022 | 0 Ответы
ukazhite sistemu uravnenijkotoraya yavlyaetsya matematicheskoj modelyu situacijopisa
Answer
HELPME986
August 2022 | 0 Ответы
spishite predlozheniya soblyudaya orfograficheskie normy vydelite grammaticheskie osno
Answer
HELPME986
July 2022 | 0 Ответы
reshite uravnenie 3x2 42 43x2 4 50
Answer
HELPME986
July 2022 | 0 Ответы
kakoe iz chisel otmecheno na koordinatnoj pryamoj tochkoj a1koren iz 22
Answer
HELPME986
July 2022 | 0 Ответы
pliiiizzadanienajditepri kakih znacheniyah peremennoj vyrazhenie imeet smyslf
Answer
HELPME986
July 2022 | 0 Ответы
helppozhalujstaaaa
Answer
HELPME986
July 2022 | 0 Ответы
pri kakih znacheniyah b i c tochka n 43 yavlyaetsya vershinoj paraboly y 3x2bx
Answer
HELPME986
July 2022 | 0 Ответы
ustanovite sootvetstvie mezhdu grafikami funkcij i formulami koto7012f3192d795f56844970e80cf6772d 76315
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 "а) x(x+3)-4(x-5)=7(x+4)-8 решите уравнение..пожалуйста поэтапно!б) 2x^4-9x^2+4=0..."
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 © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
а) x(x+3)-4(x-5)=7(x+4)-8x²+3x-4x+20=7x+28-8
x²-x+20=7x+20
x²-x-7x+20-20=0
x²-8x=0
x(x-8)=0
х=0 или х-8=0
х=8
Ответ: 0; 8
б) 2x^4-9x^2+4=0
t=x²
2t²-9t+4=0
D=(-9)²-4*2*4=81-32=49=7²
t1=(9+7)/4=4
t2=(9-7)/4=1/2
x²=4 x²=1/2
x1=2 x2=-2 x3=√1/2=√2/2 x4=-√1/2=-√2/2