Question

Tim x biet

\(\left|x+1\right|+x=2\)

Ai lam dung mik tick cho

Answer 1

\(\left|x+1\right|+x=2\)

\(\Rightarrow\left|x+1\right|=2-x\)

\(\Rightarrow\left[{}\begin{matrix}x+1=2-x\left(ĐK:x\ge-1\right)\\-x-1=2-x\left(ĐK:x< 1\right)\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=2-x-1\Rightarrow x=1-x\Rightarrow2x=1\Rightarrow x=\dfrac{1}{2}\left(TM\right)\\-x=3-x\Rightarrow0=3\left(KTM\right)\end{matrix}\right.\)

Answer 2

| x + 1 | + x = 2

\(\Leftrightarrow\)x+1+x=2

\(\Leftrightarrow\)x+x+1=2

\(\Leftrightarrow\)2x+1=2

\(\Rightarrow2x=2-1\)

\(\Rightarrow2x=1\)

\(\Rightarrow x=1:2\)

\(\Rightarrow x=\dfrac{1}{2}\)

Vậy x=\(\dfrac{1}{2}\)

Answer 3

đã làm rồi nhé

Answer 4

/X+1/+X=2
X+1+X=2
2X=1
X=1/2
Vậy X=1/2