Question

x^3-x^2=0. tim x

Answer 1

<=>x^2(x-1)=0

TH1:x^2=0 =>x=0

TH2:x-1=0 =>x=1

Vậy...

Answer 2

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

=>\(x^3=x^2\)nếu x dương

=>\(\frac{x^3}{x^2}=\frac{x^2}{x^2}=1\)

=>x=1

\(x^3=x^2\)

=>\(x^3-x^2=x^2-x^2\)

=>x=0

nếu x âm

=>\(-x^3=x^2\)

=>x=-1 hoặc 0

Vậy x = -1 hoặc 0 hoặc 1