Ответы на вопрос:
X+ 2y = 5 2x² + 3xy - 5y² + 7x + 4y = 3 x = 5 - 2y 2(5 - 2y)² + 3( 5 - 2y)y - 5y² + 7( 5 - 2y) + 4y = 3 2(25 - 20y + 4y²) + 15y - 6y² - 5y² + 35 - 14y + 4y - 3 = 0 50 - 40y + 8y² + 15y - 6y² - 5y² + 35 - 14y + 4y - 3 = 0 -3y² - 35y + 32 = 0 3y² + 35y - 32 = 0 d = 1225 + 4*3*32 = 841 y₁ = (- 35 - 29)/6 y₁ = - 64/6 y₁ = - 32/3 = - 10(2/3) y₂ = (- 35 + 29)/6 y₂ = - 1 x₁ = 5 + 2*(32/3) x₁ = 26(1/3) x₂ = 5 - 2*(-1) x₂ = 7 ответ: ( 26(1/3) ; - 10(2/3) ) ( 7; -1)
Популярно: Алгебра
-
smarika8307.07.2022 19:49
-
ера200906.04.2023 02:37
-
GiraAronEchwik11.06.2023 08:13
-
lol104621.06.2022 04:48
-
gffgfytdtdety19.06.2023 17:36
-
sevaismailova214.09.2022 23:39
-
greennattea25.02.2023 14:06
-
werasdfghjfdfd09.11.2020 19:30
-
kkmla12308.10.2020 04:46
-
malyovana201416.05.2023 01:22