Question

уравнение помогите пж

Answer 1

1) $6x (x^{2} - 4) = 0$

  6x = 0  и x^2 - 4 = 0

 x = 0 и (x-2)(x+2) = 0

 Ответ: x = 0, x = 2, x = -2

2) x(25x^2-10x+1)=0

x = 0 и 25x^2-10x+1 = 0

D = 100 - 100 = 0

x = 10/50 = 1/5

Ответ: x = 0, x = 1/5

3) x(x^2 - 9) - 4(x^2-9) = 0

   (x-4)(x^2-9)=0

   x = 4 и x^2 - 9 = 0

   x = 4 и (x-3)(x+3)=0

Ответ: x = 4, x = 3, x = -3