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August 2022
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решите уравнение x(x+4)=4
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nKrynka
Решение
x(x+4)=4
x
² + 4x - 4 = 0
D = 16 - 4*1*(-4) = 32
x = (-4 - √32)/2
x = (- 4 - 4√2) / 2
x₁ = - 2 - 2√2
x = (-4 + √32)/2
x = (- 4 + 4√2) / 2
x₂
= - 2 + 2√2
Ответ: x₁ = - 2 - 2√2 ; x₂
= - 2 + 2√2
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Answers & Comments
x(x+4)=4
x² + 4x - 4 = 0
D = 16 - 4*1*(-4) = 32
x = (-4 - √32)/2
x = (- 4 - 4√2) / 2
x₁ = - 2 - 2√2
x = (-4 + √32)/2
x = (- 4 + 4√2) / 2
x₂ = - 2 + 2√2
Ответ: x₁ = - 2 - 2√2 ; x₂ = - 2 + 2√2