x² - 4x +3 =0 D₁ = D/4 =(4/2)² -3 = 2² - 3 =4 -3 = 1 ; √D₁ =√ 1 = 1
x = 2 ± √D₁
x₁ =2 -1 = 1 ;
x₂ =2+1 =3 . ДА А ответ : 1 ; 3 .
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x² - 4x +3 = x² - x -3x +3 =(x²-x )- (3x -3) =x(x -1) -3(x-1) =(x-1)(x-3)
(x-1)(x-3) =0
вт держ
x² - 4x +3 =0 D₁ = D/4 =(4/2)² -3 = 2² - 3 =4 -3 = 1 ; √D₁ =√ 1 = 1
x = 2 ± √D₁
x₁ =2 -1 = 1 ;
x₂ =2+1 =3 . ДА А ответ : 1 ; 3 .
- - - - - - -
x² - 4x +3 = x² - x -3x +3 =(x²-x )- (3x -3) =x(x -1) -3(x-1) =(x-1)(x-3)
(x-1)(x-3) =0
вт держ