Question 61986
| x | = 2
sqrt(( x )^2) = 2
( x )^2 = 4
x = +- 2
x = 2 and x = -2
{{{graph(300,300,-10,10,-10,10,sqrt(x^2),2)}}}
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|1 - x/3| >= 2/3
sqrt( (1 - x/3)^2 ) >= 2/3
(1 - x/3)^2 >= 4/9
1 - x/3 >= 2/3 or 1 - x/3 <= -2/3
- x/3 >= -1/3 or - x/3 <= -5/3
x <= 1 or  x >= 5
{{{graph(300,300,-10,10,-10,10,sqrt((1 - x/3)^2),2/3)}}}