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fhouse934
@fhouse934
June 2023
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Знайди дискримінант квадратного рівняння х² - 4х - 21.
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marat13072
D=16-4•(-21)=16+84=100
x1=-4+10/2=3
x2=-4-10/2=-7
Ответ:х1=3, х2=-7
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Answers & Comments
x1=-4+10/2=3
x2=-4-10/2=-7
Ответ:х1=3, х2=-7