Решите уравнение x^4-25x^2=0

Question

Решите уравнение
x^4-25x^2=0

Answer 1

x= 0\\ x - 5= 0 => x= 5\\ x +5= 0 => x= -5\\" alt="x^{4} - 25 x^{2} = 0 \\ x^{2}(x^{2} - 25)= 0 \\ x^{2}(x - 5)(x +5)= 0 \\ x^{2} = 0 => x= 0\\ x - 5= 0 => x= 5\\ x +5= 0 => x= -5\\" align="absmiddle" class="latex-formula">

Ответ:  -5 ; 0 ; 5.