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Туранбек
@Туранбек
August 2022
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х^2-4х+4=0
х^2-9х-22=0
пожалуйса
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Evgenia4836
Verified answer
1) (x-2)²=0
x=2
2) x²-9x-22=0
D=81+88=169
x1=(9+13)/2=11
x2=(9-13)/2= -2
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Туранбек
спасибо
gromenkoilya
1) a= 1, b= -4, c=4
D= -4^2 - 4*1*4 = 16-16=0
x1= 4/2 = 2
2) a= 1, b = -9, c=-22
D= -9^2 - 4*1*-22 = 81 +88 = 169; корень из 169 = 13
х1 (4 - 13)/2 =4.5
x2 (4 + 13)/2= 9
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gromenkoilya
ТЕБЕ ЧЕРЕЗ ДИСКРИМИНАНТ НАДО?
Туранбек
да
gromenkoilya
a= 1, b = -9, c=-22
D= -9^2 - 4*1*-22 = 81 +88 = 169; корень из 169 = 13
х1 (9 - 13)/2 = -2
x2 (9 + 13)/2= 11
gromenkoilya
1 правильно, 2 ошибка была сорре
Туранбек
спасибо
gromenkoilya
незачто
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Answers & Comments
Verified answer
1) (x-2)²=0x=2
2) x²-9x-22=0
D=81+88=169
x1=(9+13)/2=11
x2=(9-13)/2= -2
D= -4^2 - 4*1*4 = 16-16=0
x1= 4/2 = 2
2) a= 1, b = -9, c=-22
D= -9^2 - 4*1*-22 = 81 +88 = 169; корень из 169 = 13
х1 (4 - 13)/2 =4.5
x2 (4 + 13)/2= 9
D= -9^2 - 4*1*-22 = 81 +88 = 169; корень из 169 = 13
х1 (9 - 13)/2 = -2
x2 (9 + 13)/2= 11