Предмет: Математика, автор: minnahmetov1997

5x+x^2-7=0 Пожалуйста

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Автор ответа: Gllorianisy

0

5х+х^2-7=0
х^2+5х-7=0
D= b^2-4ab= 5^2-4×1×(-7)=25-(-28)=53
x1= (-5-√53)/2
x2=(-5+√53)/2

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