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Гимран
@Гимран
July 2022
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разложите квадратный трехчлен на множители.
1)3x^2-10x+3=0
2)3x^2+11x-34=0
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root90
1)
D = 100 - 4*3*3 = 100 - 36 = 64
x1 = (10 + 8) / 6 = 3
x2 = (10 - 8) / 6 = 1/3
ответ: 3(x-3)(x-1/3)
2)
D = 11^2 -4*(-34)*3 = 121 + 136*3 = 121 + 408 = 529 (корень равен : 23)
x1 = (-11+23)/2*3 = 2
x2 = (-11-23)/6 = -34/6 = -17/3
ответ: 3(x-2)(x+17/3)
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Answers & Comments
D = 100 - 4*3*3 = 100 - 36 = 64
x1 = (10 + 8) / 6 = 3
x2 = (10 - 8) / 6 = 1/3
ответ: 3(x-3)(x-1/3)
2)
D = 11^2 -4*(-34)*3 = 121 + 136*3 = 121 + 408 = 529 (корень равен : 23)
x1 = (-11+23)/2*3 = 2
x2 = (-11-23)/6 = -34/6 = -17/3
ответ: 3(x-2)(x+17/3)