Question

(n-3)(n-5)= 0

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Answer 1

`(n-3).(x-5)=0`

`@TH1:`

`n-3=0`

`n=0+3`

`n=3`

Vậy `n =3`

`@TH2:`

`n-5=0`

`n=0+5`

`n=5`

Vậy `n = 5`

Answer 2

\(\left(n-3\right)\left(n-5\right)=0\)

\(\Rightarrow\left[{}\begin{matrix}n-3=0\\n-5=0\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}n=3\\n=5\end{matrix}\right.\)

Answer 3

\(\text{(n-3)(n-5)= 0}\)

\(\Leftrightarrow\left[{}\begin{matrix}n-3=0\\n-5=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}n=3\\n=5\end{matrix}\right.\)