Question

rezolvați ecuatia:

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${5x}^{2} - 10x + 5 = 0 \\ {x}^{2} - 11x + 28 = 0$
vreau răspunsurile repede va rog


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Answer 1

Răspuns:

$5 {x}^{2} - 10x + 5 = 0$

$(a = 5)(b = - 10)(c = 5)$

∆ = 100 - 100

∆ = 0

x₁ = -b/2a

x₁ = 10/10

x₁ = 1

x₂ = x₁

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x² - 11x + 28 = 0

(x - 7)(x - 4) = 0

x₁ = 7

x₂ = 4