Question

x³=x²

Answer 1

`x^3=x^2`

`<=>x^3-x^2=0`

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

`<=> x^2=0` hoặc `x-1=0`

`<=> x=0` hoặc `x=1`

Answer 2

Đề yêu cầu chi đó em?

Answer 3

`@` `\text {Ans}`

`\downarrow`

`x^3 = x^2`

`<=> x^3 - x^2 = 0`

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

`<=>`\(\left[{}\begin{matrix}x^2=0\\x-1=0\end{matrix}\right.\)

`<=>`\(\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)

Vậy, `x \in {0; 1}.`