Verified answer

Ответ:

1) [tex]x_{1}[/tex] = 0     [tex]x_{2}[/tex] = 7

2) [tex]x_{1}[/tex] = - [tex]\frac{8}{25}[/tex]     [tex]x_{2}[/tex] = [tex]\frac{11}{3}[/tex]

3) [tex]x_{1}[/tex] = -6      [tex]x_{2}[/tex] = 4,5

Пошаговое объяснение:

а) x(x - 7) = 0

[tex]x_{1} = 0[/tex]

[tex]x_{2} = 0+7[/tex]

[tex]x_{2} =7[/tex]

[tex]x_{1\\[/tex] = 0    [tex]x_{2}[/tex] = 7

б) (5x + 1,6) (3x-11) = 0

(5x + [tex]\frac{8}{5}[/tex] ) (3x-11) = 0

5x + [tex]\frac{8}{5}[/tex] = 0

3x - 11 = 0

5x = 0 - [tex]\frac{8}{5}[/tex]

5x = - [tex]\frac{8}{5}[/tex]

[tex]x_{1 =[/tex] -[tex]\frac{8}{5}[/tex] ÷ 5

[tex]x_{1} =[/tex] - [tex]\frac{8}{25}[/tex]

3x = 0 + 11

3x = 11

[tex]x_{2}[/tex] = 11 ÷ 3

[tex]x_{2}[/tex] = [tex]\frac{11}{3}[/tex]

[tex]x_{1}[/tex] = - [tex]\frac{8}{25}[/tex]      [tex]x_{2}[/tex] = [tex]\frac{11}{3}[/tex]

в) (x+6)(x-4,5) = 0

(x+6)(x - [tex]\frac{9}{2}[/tex] ) = 0

x + 6 = 0

x - [tex]\frac{9}{2}[/tex] = 0

[tex]x_{1[/tex] = 0 - 6

[tex]x_{1}[/tex] = -6

[tex]x_{2}[/tex] = 0 + [tex]\frac{9}{2}[/tex]

[tex]x_{2}[/tex] = [tex]\frac{9}{2}[/tex] = 4,5

[tex]x_{1}[/tex] = -6      [tex]x_{2}[/tex] = 4,5