Предмет: Алгебра, автор: Аноним

!!срочно!!
Розв’яжіть неповні квадратні рівняння:
1) 7х 2 -28=0; 2) 2х 2 +3х=0

Ответы

Автор ответа: lenakudelko2

Ответ:

$7x {}^{2} - 28 = 0 \\ 7x {}^{2} = 28 \\ x {}^{2} = 4 \\ x = - 2 \\ x = 2$

$2 { x}^{2} + 3 \times = 0 \\ x(2x + 3) = 0 \\ x = 0 \\ x = - 1.5$

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!!срочно!! Розв’яжіть неповні квадратні рівняння: 1) 7х 2 -28=0; 2) 2х 2 +3х=0

Ответы

!!срочно!!
Розв’яжіть неповні квадратні рівняння:
1) 7х 2 -28=0; 2) 2х 2 +3х=0