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August 2022
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Разложите на множители квадратные трехчлены: x^2-15x+26
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ShirokovP
Verified answer
X^2 - 15x + 26 = 0
D = 225 - 104 = 121 = 11^2
x₁ = ( 15 + 11)/2 = 26/2 = 13;
x₂ = ( 15 - 11)/2 = 4/2 = 2
x^2 - 15x + 26 = (x - 13)(x - 2)
4 votes
Thanks 8
люблюпельмени
Х²-15х+26=0
а=1, b=-15, c=26
Д=b²-4aс=225-104=121
Д>0
х1=-b+√Д/2а=15+11/2=13
х2=-b-√Д/2а=15-11/2=2
ответ:(х-13)(х-2)
2 votes
Thanks 6
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Answers & Comments
Verified answer
X^2 - 15x + 26 = 0D = 225 - 104 = 121 = 11^2
x₁ = ( 15 + 11)/2 = 26/2 = 13;
x₂ = ( 15 - 11)/2 = 4/2 = 2
x^2 - 15x + 26 = (x - 13)(x - 2)
а=1, b=-15, c=26
Д=b²-4aс=225-104=121
Д>0
х1=-b+√Д/2а=15+11/2=13
х2=-b-√Д/2а=15-11/2=2
ответ:(х-13)(х-2)