Home
О нас
Products
Services
Регистрация
Войти
Поиск
irinkailnitska11
@irinkailnitska11
July 2022
2
3
Report
Допоможіть розв*язати системи рівнянь,даю 50 балів
1) x^2+6xy+y^2=16
x-3y=-2
2) 2x+5xy+14
y-5xy=-9
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
stalin777
1)
х²+6ху+у²=16
х-3у=-2 (х=-2+3у)
(-2+3у)²+6(-2+3у)у+у²=16
4-12у+у²-12у+18у²+у²=16
4-24у+20у²=16(все сокращаем на 4)
1-6у+5у²=16
5у²-6у-15=0
д=36+300
д=336
√д=12√2
у=(6±12√2)/10
у1,2=(3±6√2)/5
х1=(-2+3(3+6√2))/5
х1=(-2+9+18√2)/5
х1=(7+18√2)/5
х2=(-2+3(3-6√2)/5
х2=(-2+9-18√2)/5
х2=(7-18√2)/5
1 votes
Thanks 0
gorshckowashur1
Ответ:
1)x^2+6xy+2y^2=16
x-3y=-2
x=2+3y
1)(2+3y)^2+6(2+3y)*y+y^2=16
4+3*2*2y+9y^2+12y+18y^2+y^2=16
2)12y+28y^2+4-16=0
28y^2+12y-12=0 |/2
14y^2+6y-6=0 |/2
7y^2+3y-3=0
D=3^2+4*3*7=9+12*7=84+9=93
x1=(-3+_/93)/14
x2=(-3-_/93)/14
#2)
2x+5xy=14
y-5xy=-9
Y(1-5X)=-9
1)Y=-9/(1-5X)
2)2x+5*x*((-9)/1-5x)=14
2X+(-45X/1-5X)=14 |*1-5x
2x-10x^2-45x=14-70x
10x^2-43x+70x-14=0
10x^2+27x-14=0
D=27^2+14*10*2=449
3)x1=(-27+_/449)/20
x2=(-27-_/449)'20
2 votes
Thanks 0
More Questions From This User
See All
irinkailnitska11
July 2022 | 0 Ответы
dayu 50 baliv obchislit masu krohmalyu yaku mozhna oderzhati z karbon iv oksidu ob
Answer
irinkailnitska11
March 2022 | 0 Ответы
m3a vantazhopidjomnist mashini 25 kn 2pyatitonnoyu vantazhivkoyu potribno pereves
Answer
irinkailnitska11
September 2021 | 0 Ответы
dayu 99 balivdopomozhit tilo vilno padaye z visoti 80 mza yakij chas vono proho
Answer
irinkailnitska11
September 2021 | 0 Ответы
divchina v rozhevomu namisti divitsya na sonce z pid ruki vipisati vsi mozhlivi slo
Answer
irinkailnitska11
September 2021 | 0 Ответы
skilki gramiv so2 treba vzyatishob bulo stilki molekul skilki yih mistitsya v
Answer
irinkailnitska11
September 2021 | 0 Ответы
rozvyazhit bud laska dayu 99 baliv
Answer
irinkailnitska11
August 2021 | 0 Ответы
avtomobil ruhayetsya zi shvidkistyu 60 km za godinuyaksho velosipedist poyide nazust
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 "Допоможіть розв*язати системи рівнянь,даю 50 балів 1) x^2+6xy+y^2=16 x-3y=-2 2) ..."
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
х²+6ху+у²=16
х-3у=-2 (х=-2+3у)
(-2+3у)²+6(-2+3у)у+у²=16
4-12у+у²-12у+18у²+у²=16
4-24у+20у²=16(все сокращаем на 4)
1-6у+5у²=16
5у²-6у-15=0
д=36+300
д=336
√д=12√2
у=(6±12√2)/10
у1,2=(3±6√2)/5
х1=(-2+3(3+6√2))/5
х1=(-2+9+18√2)/5
х1=(7+18√2)/5
х2=(-2+3(3-6√2)/5
х2=(-2+9-18√2)/5
х2=(7-18√2)/5
1)x^2+6xy+2y^2=16
x-3y=-2
x=2+3y
1)(2+3y)^2+6(2+3y)*y+y^2=16
4+3*2*2y+9y^2+12y+18y^2+y^2=16
2)12y+28y^2+4-16=0
28y^2+12y-12=0 |/2
14y^2+6y-6=0 |/2
7y^2+3y-3=0
D=3^2+4*3*7=9+12*7=84+9=93
x1=(-3+_/93)/14
x2=(-3-_/93)/14
#2)
2x+5xy=14
y-5xy=-9
Y(1-5X)=-9
1)Y=-9/(1-5X)
2)2x+5*x*((-9)/1-5x)=14
2X+(-45X/1-5X)=14 |*1-5x
2x-10x^2-45x=14-70x
10x^2-43x+70x-14=0
10x^2+27x-14=0
D=27^2+14*10*2=449
3)x1=(-27+_/449)/20
x2=(-27-_/449)'20