система уравнений x^2+y^2=8,xy=4. Created by NastyaMoore. algebra-ru

система уравнений x^2+y^2=8,xy=4...

NastyaMoore @NastyaMoore

July 2022 1 2 Report

система уравнений x^2+y^2=8,xy=4

Answers & Comments

AnonimusPro

Verified answer

X^2+2xy+y^2-2xy=8;
xy=4
(x+y)^2-8=8
(x+y)^2=16
(x+y-4)(x+y+4)=0;
имеем 2 системы:
1) x+y-4=0
xy=4;
x=4/y
4/y+y=4
y^2-4y+4=0;
(y-2)^2=0; y=2;
x=4/2=2
2) x+y+4=0
xy=4
x=4/y
4/y+y+4=0;
y^2+4y+4=0;
(y+2)^2=0;
y=-2;
x=4/-2=-2
Ответ: (2;2) и (-2;-2)

0 votes Thanks 0

1 promyshlennost razvvaetsya burnymi tempami 2 nad zdaniem razvvaetsya gosudafd355a455991c09ecf10f60d888d4184 86711

Answer

NastyaMoore August 2022 | 0 Ответы

chemu ravno polnoe napryazhenie na uchastke cepi s parallelnym soedineniem dvuh prof5e140406270bc59fb90860e5bbdd9dd 68214

Answer

NastyaMoore August 2022 | 0 Ответы

kakoe kolichestvo teploty vydelitsya v provolochnoj spirali soprotivlenie 20 om prie550e0a58ff389d71a04dee10bc5584e 15051

Answer

NastyaMoore August 2022 | 0 Ответы

kakoj obem n u uglekislogo gaza vydelitsya pri nagrevanii 1 mol gidrokarbon333930142658e9bbf76b419a7f828471 52635

Answer

NastyaMoore July 2022 | 0 Ответы

oprelelite pervyj chlen i znamenatel geometricheskoj progressii esli izanstno chto

Answer

Answers & Comments

Verified answer

1 promyshlennost razvvaetsya burnymi tempami 2 nad zdaniem razvvaetsya gosudafd355a455991c09ecf10f60d888d4184 86711

chemu ravno polnoe napryazhenie na uchastke cepi s parallelnym soedineniem dvuh prof5e140406270bc59fb90860e5bbdd9dd 68214

kakoe kolichestvo teploty vydelitsya v provolochnoj spirali soprotivlenie 20 om prie550e0a58ff389d71a04dee10bc5584e 15051

lnejka logarifmicheskaya okonchatelno oblnitsya posdet na stule posdet

vychislite massu 10 l vozduha pri normalnyh usloviyahsrochno

kompoziciya sochinenie rassuzhdenie 1 dat opredelenie slovuprokommentirovat eg

m1c364b47578327100e82cff99e2bf2e0 52940

drobnoe racionalnoe uravnenie16cefcb12696f4ee6a74e141ab69a3f8 98121

kakoj obem n u uglekislogo gaza vydelitsya pri nagrevanii 1 mol gidrokarbon333930142658e9bbf76b419a7f828471 52635

oprelelite pervyj chlen i znamenatel geometricheskoj progressii esli izanstno chto

рекомендуемые вопросы

Helpful Links

Helpful Social