Inequality how does this make sense?

[sg001]

inequality... how does this make sense??

Homework Statement

Solve (x-1)(x-2)<0

Homework Equations

The Attempt at a Solution

Given this is a parabola
graphical solution
cuts the x-axis at 1 & 2
therefore sltn...
1<x<2

However, in my textbook the answer says (1/√5)/2<x<(1+√5)/2
Can someone please confirm this is the wrong answer
Or AM I MISSING SOMETHING HUGE HERE??

 

[ehild]

Your solution is correct.

ehild

 

[sg001]

thanks!