Question

[(x-3)^2 + 9] . 8 = 2.36

Answer 1

Đề bài là gì zậy

Answer 2

\(\Rightarrow\left[\left(x-3\right)^2+9\right].8=72\)

\(\Rightarrow\left(x-3\right)^2+9=\frac{72}{8}=9\)

\(\Rightarrow\left(x+3\right)^2=9-9=0\)

\(\Rightarrow x=-3\)

Answer 3

[(x-3)² +9] .8= 2.36

\(\Rightarrow\)(x-3)²+9=2.36\(\div\)8=9

→(x-3)²=0

→x-3=0 →x=3