решите пж
3x² + 2x – 1 = 0 ; x 1 + x 2 = –
2
3
; x 1 • x 2 = –
1
3
.
3x² + 2x – 1 = 0 ; x 1 + x 2 = –
2
3
; x 1 • x 2 = –
1
3
.
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ответ будет равен 1/3
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