Question

| X-1.7| =2.3

Answer 1

|x-1,7|=2,3 xét 2 trường hợp

* th1:

\(\left|x-1.7\right|\ge0\)

\(\Rightarrow\left|x-1.7\right|=x-1.7\)

\(\Rightarrow x-1.7=2.3\Rightarrow x=2.3+1.7=4\)

th2:

\(\left|x-1.7\right|< 0\)

\(\Rightarrow\left|x-1.7\right|=1.7-x\)

\(\Rightarrow1.7-x=2.3\Rightarrow x=-0.6\)

vậy x = 4 hoặc x = -0.6

Answer 2

\(\left|x-1.7\right|=2.3\)

TH1 : \(x-1.7=2.3\)

\(x=2.3+1.7\)

\(x=4\)

TH2 :

\(x-1.7=-2.3\)

\(x=-2.3+1.7\)

\(x=-0.6\)

Answer 3

\(|x-1,7|=2,3\)

\(\Rightarrow\orbr{\begin{cases}x-1,7=2,3\\x-1,7=-2,3\end{cases}}\Rightarrow\orbr{\begin{cases}x=4\\x=-0,6\end{cases}}\)

Vậy x = 4 hoặc x = -0,6

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