Question

решить уравнение x3-3x3-x+3=0

Answer 1

x3-3x2-x+3=0
x2(x-3)-(x-3)=0
(x2-1)(x-3)=0
(x-1)(x+1)(x-3)=0
x=-1
x=1
x=3

Answer 2

3x-9-x+3=0
2x=9-3
2x=6
x=3