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karinakarpova02
@karinakarpova02
July 2022
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Номер 123, 1 и 2 уравнение
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gal4enok007
Х^2 -9х+14=0
Х^2 -2*4,5х+20,5-20,25+14=
(Х-4,5)^2 - 6,25=0
(Х-4,5)=2,5
Х=2,5+4,5
Х=7
Х^2 -2*5,5х+30,25-30,25 +30=0
(Х-5,5)^2=0,25
Х-5,5=0,5
Х=6
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Answers & Comments
Х^2 -2*4,5х+20,5-20,25+14=
(Х-4,5)^2 - 6,25=0
(Х-4,5)=2,5
Х=2,5+4,5
Х=7
Х^2 -2*5,5х+30,25-30,25 +30=0
(Х-5,5)^2=0,25
Х-5,5=0,5
Х=6