Срочна 1) (x-2)(x+3)=0 2) x^4-2x^3-3x^2=0 3) x^5-121x^3=0

Question

Срочна
1) (x-2)(x+3)=0
2) x^4-2x^3-3x^2=0
3) x^5-121x^3=0

Answer 1

1) x-2=0
x=2
x+3=0
x=-3
2) x^2(x^2-2x-3)=0
x=0
x^2-2x-3=0
D=16
x=(2+-4)/2=3; -1
3) x^3(x^2-121)=0
x=0
x^2=121
x=+-11