Предмет: Алгебра, автор: sorohuk08ua

Розв'язати систему рівнянь:
х²-у=17
х+у=3
(Розпишіть як розв'язувати)
СРОЧНО!!!ПОЖАЛУЙСТА!!!

Ответы

Автор ответа: zxsfie
0

Ответ:

смотри ниже

Объяснение:

x= 3-y

x^{2}-y=17\\

подставляем

(3-y)^{2}-y =17\\ y_{1}=-1\\ y_{2}=8

Отсюда

x_{1} = 3+1 =4\\x_{2}= 3-8=-5

(4;-1) и (-5;8)

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In the Supermarket.
There are many kinds of shops catering for needs of the population. You can go shopping to small food stores: the grocery store, liquor store, store of dairy products, butcher's, bakery, greengrocer's, fishmonger's, confectionery, candy store.
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