Question

x⁴-13x²-12x=0 помогите пожалуйста срочно

Answer 1

​x​4​​−13x​2​​−12x=0​
x(x​3​​−x−12x−12)=0​
x(x(x​2​​−1)−12(x−1))=0​
x(x(x−1)(x+1)−12(x+1))=0
​x(x+1)(x​2​​−x−12)=0
​x(x+1)(x​2​​+3x−4x−12)=0​
x(x+1)(x(x+3)−4(x+3))=0​
x(x+1)(x+3)(x−4)=0​
x=0, x=−1, x=−3, x=4​​