Home
О нас
Products
Services
Регистрация
Войти
Поиск
sashaalexsa
@sashaalexsa
March 2022
1
12
Report
2. Решите систему уравнений
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
KarinaYouchi
X+y=3 y=3-x
xy=-4
x*(3-x)=-4
3x-x
²=-4
-x²+3x+4=0 | *(-1)
x²-3x-4=0
D=(-3)²-4*1*(-4)=9+16=√25=5
x1=
3+5
=4
2
x2=
3-5
=-1
2
x1=4 x2=-1
y=3-4 y=3-(-1)
y1=-1 y2=4
Ответ:(4;-1);(-1;4)
x²+y²=17
xy=-4 x=-4-y |*(-1)
x=y+4
(y+4)²+y²=17
y²+8y+16+y²-17=0
2y²+8y-1=0
D=8²-4*2*(-1)=64+8=72
Не могу решить.
x+2y=7 x=7-2y
xy+2y²=14
(7-2y)*y+2y²-14=0
7y-2y²+2y²-14=0
7y-14=0
7y=14
y=2
x=7-4
x=3
Ответ: (3;2)
0 votes
Thanks 1
More Questions From This User
See All
sashaalexsa
July 2022 | 0 Ответы
reshite neravenstvo 5x8gt 3x
Answer
sashaalexsa
July 2022 | 0 Ответы
reshit sistemu uravnenij 1 2x3y5 x y2 22x3y5 x2y
Answer
sashaalexsa
March 2022 | 0 Ответы
najdite znachenie vyrazheniya 10x 97
Answer
sashaalexsa
March 2022 | 0 Ответы
srochno pomogite s pervym
Answer
sashaalexsa
September 2021 | 0 Ответы
najdite ploshad parallelogrammaf1fb52bcf15ad4f71f31e336a6c4fce7 88435
Answer
sashaalexsa
August 2021 | 0 Ответы
reshite uravnenie x35x2 4x 200
Answer
sashaalexsa
August 2021 | 0 Ответы
reshite uravnenie x 2x26x96x3
Answer
sashaalexsa
August 2021 | 0 Ответы
postrojte grafik funkcii yx 1 x1x
Answer
sashaalexsa
August 2021 | 0 Ответы
raskrojte modul x 1 x1x
Answer
sashaalexsa
August 2021 | 0 Ответы
reshite neravenstvo 2x 1gtx1 2x 3lt ili ravno 3x2 2x 1gt2x3
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 "2. Решите систему уравнений..."
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
xy=-4
x*(3-x)=-4
3x-x²=-4
-x²+3x+4=0 | *(-1)
x²-3x-4=0
D=(-3)²-4*1*(-4)=9+16=√25=5
x1=3+5=4
2
x2=3-5=-1
2
x1=4 x2=-1
y=3-4 y=3-(-1)
y1=-1 y2=4
Ответ:(4;-1);(-1;4)
x²+y²=17
xy=-4 x=-4-y |*(-1)
x=y+4
(y+4)²+y²=17
y²+8y+16+y²-17=0
2y²+8y-1=0
D=8²-4*2*(-1)=64+8=72
Не могу решить.
x+2y=7 x=7-2y
xy+2y²=14
(7-2y)*y+2y²-14=0
7y-2y²+2y²-14=0
7y-14=0
7y=14
y=2
x=7-4
x=3
Ответ: (3;2)