Question

giải toán trên máy tính cầm tay

Answer 1

|2x-3|=1/x

=> |2x-3| = \(\frac{1}{x}\)

=> TH1 : 

2x-3=1/x

=> 2x=91/30

=> x=91/60

TH2 : 2x-3=-1/x

=> 2x=89/30

=> x=89/60

Answer 2

á đù lộn đề :v

Answer 3

\(!2x-3!=\frac{1}{x}\)

DK:\(x>0\)

\(\left(1\right)2x-3=\frac{1}{x}\Leftrightarrow2x^2-3x-1=0\Leftrightarrow\left(4x-3\right)^{^2}-17=0\Rightarrow x=\frac{3-\sqrt{17}}{4}\left(loai\right);x=\frac{3+\sqrt{17}}{4}\)

\(\left(2\right)2x-3=-\frac{1}{x}\Leftrightarrow2x^2-3x+1=0\Rightarrow x=1\&x=\frac{1}{2}\)