Question

(X-5)^2=9

 

 

 

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Answer 1

\(\left(x-5\right)^2=9\)

\(\Leftrightarrow\left(x-5\right)^2=3^2\)

\(\Leftrightarrow x-5=3\)

\(\Leftrightarrow x=8\)

Vậy \(x=8\)

Answer 2

Trả lời :

\(\left(x-5\right)^2=9\)

\(\Rightarrow\orbr{\begin{cases}\left(x-5\right)^2=3^2\\\left(x-5\right)^2=\left(-3\right)^2\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x-5=3\\x-5=-3\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=8\\x=2\end{cases}}\)

~Std well~

#Dương

Answer 3

(x-5)²=9

(x-5)²= 3³

x-5 =3

x=3+5

x=8

Answer 4

\(\left(x-5\right)^2=9\)

\(=>\left(x-5\right)^2=3^2\)

\(=>x-5=3\)

\(=>x=3+5=8\)

Answer 5

\(\left(x-5\right)^2=9\)

\(\Rightarrow\left(x-5\right)^2=3^2\)

\(\Rightarrow x-5=3\)

\(\Rightarrow x=8\)

Vậy \(x=8\)

Answer 6

\(\left(x-5\right)^2=9=3^2\Rightarrow\orbr{\begin{cases}x-5=3\\x-5=-3\end{cases}\Rightarrow\orbr{\begin{cases}x=8\\x=2\end{cases}}}\)

Vậy x thuộc {2;8}

Answer 7

(X-5)^2=3^2

X-5=3

X   =3+5

X   =8

 Hoặc X cũng có thể = 2 vì:

(2-5)^2=9

-3^2=9

=>X=2 hoặc 8

Answer 8

\(\left(x-5\right)^2=9\)

\(\Leftrightarrow\left(x-5\right)^2=3^2\)

\(\Leftrightarrow x-5=3\)

\(\Leftrightarrow x=8\)

Answer 9

(x-5)^2 = 9

=> (x-5)^2 = 3^2

=> x - 5 = 3

=> x = 8

Vậy x = 8