Question

(x+2)mũ 2 =64

Answer 1

\(\left(x+2\right)^2=64\)

\(\Rightarrow\left[{}\begin{matrix}x+2=8\\x+2=-8\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x+6\\x=-10\end{matrix}\right.\)

Answer 2

\(x+2=8\)

\(x=6\)

Answer 3

Lời giải:

$(x+2)^2=64=8^2=(-8)^2$

$\Rightarrow x+2=8$ hoặc $x+2=-8$

$\Rightarrow x=6$ hoặc $x=-10$

Answer 4

(x+2)\(^2\)=64

⇒(x+2)\(^2\)=8\(^2\)

⇒\(\left[{}\begin{matrix}x+2=-8\\x+2=8\end{matrix}\right.\) ⇒\(\left[{}\begin{matrix}x=-10\\x=6\end{matrix}\right.\)