Question

(x+2)^2 = 64 sos

Answer 1

`(x+2)^2 =64`

`=>(x+2)^2=(+-8)^2`

`@ TH1`

`x+2=8`

`=>x=8-2`

`=>x=6`

`@ TH2`

`x+2=-8`

`=>x=-8-2`

`=>x=-10`

Answer 2

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

\(\Rightarrow\left(x+2\right)^2=\left(\pm8\right)^2\)

+) \(x+2=8\)

\(\Rightarrow x=8-2\)

\(\Rightarrow x=6\)

+) \(x+2=-8\)

\(\Rightarrow x=-8-2\)

\(\Rightarrow x=-10\)

Vậy: ....