Question

tim x bang cach phan tich da thuc thanh nhan tu

x³-3x²+3x-1=0

Answer 1

\(x^3-3x^2+3x-1\) =0

=>\(\left(x-1\right)^3\)=0

=>x-1=0

=>x=1

vậy x =1

Answer 2

\(x^3-3x^2+3x-1=0\)

\(\Leftrightarrow\left(x-1\right)^3\)

\(\Leftrightarrow x-1=0\)

\(\Leftrightarrow x=1\)