Question

Bạn ơi cứu mik

Answer 1

1:

b: \(=3-\sqrt{2}+\sqrt{2}-1=2\)

2: \(\Leftrightarrow\sqrt{2}\left|3x+1\right|=\sqrt{2}\left(3x+2\right)\)

=>|3x+1|=3x+2

TH1: x>=-1/3

=>3x+1=3x+2

=>1=0(loại)

TH2: x<-1/3

=>-3x-1=3x+2

=>-6x=3

=>x=-1/2(nhận)