Question

\(\sqrt{x^2-6x+9}=3\)

Answer 1

https://i.imgur.com/KDV9PRR.jpg

Answer 2

Answer 3

\(\sqrt{x^2-6x+9}=3\)

=> \(\sqrt{\left(x-3\right)^2}=3\)

=> x-3=9 hoặc x-3=-9

=> x=12 hoặc x=-6

Answer 4

\(\sqrt{x^2-6x+9}=3\)

\(\Rightarrow\sqrt{\left(x-3\right)^2=3}\)

\(\Rightarrow\left|x-3\right|=4\)

\(\Rightarrow\left\{{}\begin{matrix}x-3=3\\-x-3=3\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=6\\x=-6\end{matrix}\right.\)

vậy...........

mk k chắc đáp án đâu nhé