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Sergey4379
@Sergey4379
June 2022
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Среди чисел 1, 2, 3, -1 выберите корни уравнения y^2 -5y+6=0
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robototexnik
Проще решить и посмотреть : D=25-4*1*6=1
y=(5+1)/2=3
y=(5-1)/2=2
6 votes
Thanks 7
uekmyfhfp
Решим уравнение
y^2 - 5 y + 6 = 0;
D = b^2 - 4 a c = (-5)^2 - 4*1 *6 = 25 -24 = 1 = 1^2 ;
x1 = (5-1) / 2 = 2;
x2 = (5+1) / 2 = 3.
7 votes
Thanks 9
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Answers & Comments
y=(5+1)/2=3
y=(5-1)/2=2
y^2 - 5 y + 6 = 0;
D = b^2 - 4 a c = (-5)^2 - 4*1 *6 = 25 -24 = 1 = 1^2 ;
x1 = (5-1) / 2 = 2;
x2 = (5+1) / 2 = 3.