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musikova
@musikova
July 2022
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Вычислите X1+X2,если известно что Х1,х2-корни квадратного уравнения:Х^2-2X-4=0
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Gviona
X^2-2x-4=0
По теореме Виета: x1+x2=-b/a=2/1=2
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По теореме Виета: x1+x2=-b/a=2/1=2