_______ \/ 3 - x >= x
sqrt(3 - x) >= x
____ 1 \/ 13 (-oo, - - + ------] 2 2
x in Interval(-oo, -1/2 + sqrt(13)/2)
/ ____ \ | 1 \/ 13 | And|x <= - - + ------, -oo < x| \ 2 2 /
(-oo < x)∧(x <= -1/2 + sqrt(13)/2)