Предмет: Математика, автор: ВитачкаСолнце

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Автор ответа: Vanka69

D=b^2-4ac
D=22^2-4*7*3=484-84=400
X1,2=(-b+- коріньD)/2a
X1=(22+20)/14=3
X2=(22-20)/14=2/14=1/7

Автор ответа: dlnzgdlln

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