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alina12sheshina
@alina12sheshina
August 2022
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Помогите пожалуйста 771 номер по алгебре решить!!! Срочно надо! Буду очень благодарна (25 баллов)
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nKrynka
A) 1,2x² + x = 0
x(1,2x + 1) = 0
x₁ = 0
x₂ = - 5/6
б) 1,6x + x² = 0
x(1,6 + x) = 0
x₁ = 0
x₂ = - 1,6
в) 0,5x² - x = 0
x(0,5x - 1) = 0
x₁ = 0
x₂ = 2
г) 5x² = x
5x² - x = 0
x(5x - 1) = 0
x₁ = 0
x₂ = 1/5
д) 1,бx² = 3x
1,бx² - 3x = 0
x(1,6x - 3) = 0
x₁ = 0
1,6x - 3 = 0
1,6x = 3
x = 15/8
x₂ = 1(7/8)
е) x = x²
x² - x = 0
(x(x - 1) = 0
x₁ = 0
x - 1 = 0
x₂ = 1
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Answers & Comments
x(1,2x + 1) = 0
x₁ = 0
x₂ = - 5/6
б) 1,6x + x² = 0
x(1,6 + x) = 0
x₁ = 0
x₂ = - 1,6
в) 0,5x² - x = 0
x(0,5x - 1) = 0
x₁ = 0
x₂ = 2
г) 5x² = x
5x² - x = 0
x(5x - 1) = 0
x₁ = 0
x₂ = 1/5
д) 1,бx² = 3x
1,бx² - 3x = 0
x(1,6x - 3) = 0
x₁ = 0
1,6x - 3 = 0
1,6x = 3
x = 15/8
x₂ = 1(7/8)
е) x = x²
x² - x = 0
(x(x - 1) = 0
x₁ = 0
x - 1 = 0
x₂ = 1