Question

ecuația 2x-x²=0 va rog 2-3x²=0​

Answer 1

Răspuns:

2x - x² = 0 <=>

x × (2 - x) = 0 <=>

I) x₁ = 0

II) 2 - x = 0 <=> x₂ = 2

=> S = { 0 ; 2 }

2 - 3x² = 0 <=>

- 3x² = -2 <=>

x² = -2/-3 = 2/3

=> x = ± √(2/3) = ±√6/3

=> x₁ = - √6/3,

x₂ = √6/3.

=> S = { -√6/3 ; √6/3 }