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Ответ

Ответ дан
ChemistryLove
дискриминант=16-4*4=0, значит корень один
х =(4-0)/2=2
корень уравнения = 2

Ответ

Ответ дан
wieslawlozickip5w1nd

X²-4x+4=0

(x-2)²=0

x-2=0

x=2

ильи  через   дискриминант

x²-4x+4=o

D=b²-4ac

D=16-4*1*4=16-16     ,D=0    это значит уравнение имеет один корен

X1,2=-b/2a

X1,2=4/2*1=2

X=2


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