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ролик23
@ролик23
July 2022
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найдите корни уравнения срочно
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4х + 1 = 9 / (х -1) Общий знаменатель (х - 1)
4х ( х - 1) + 1 (х - 1) = 9
4х^2 - 4x + x - 1 = 9
4x^2 - 3x - 10 = 0
D = 9 -4*(-10)*4 = 9 + 160 = 169; YD = 13
x1 = (3 + 13) / 8 = 2
x2 = (3 - 13) / 8 = - 1,25
x1 = 2
x2 = - 1,25
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ролик23
там ответ должен быть такой 1 и 4 ,5
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Answers & Comments
Verified answer
4х + 1 = 9 / (х -1) Общий знаменатель (х - 1)4х ( х - 1) + 1 (х - 1) = 9
4х^2 - 4x + x - 1 = 9
4x^2 - 3x - 10 = 0
D = 9 -4*(-10)*4 = 9 + 160 = 169; YD = 13
x1 = (3 + 13) / 8 = 2
x2 = (3 - 13) / 8 = - 1,25
x1 = 2
x2 = - 1,25