Question

Tìm x

|2x-1| = |2x+3|

Answer 1

|2x-1| = |2x+3|

=>2x-1=-(2x+3) hoặc 2x+3

Xét 2x-1=-2x-3

=>4x=-2

=>\(x=-\frac{1}{2}\)

Xét 2x-1=2x+3

=>2x-1-2x-3=0

=>-4=0 (loại)

Vậy \(x=-\frac{1}{2}\)

Answer 2

\(\left|2x-1\right|=\left|2x+3\right|\\ =>2x-1=-2x+3ho\text{ặ}c2x+3\\ \)

TH1:\(2x-1=-2x+3\\ =>2x-1=-\left(2x+3\right)\\ =>4x=-2\\ =>x=-\frac{1}{2}\)

TH2:\(2x-1=2x+3\\ =>2x-1-2x-3=0\\ =>-4=0\left(lo\text{ại}\right)\)

Vậy \(x=-\frac{1}{2}\)

Answer 3

-0.5 sr mk ko bít giải