What are all values of
x
such that
x
2
+ 7
x
+ 6 ≥ 0 ?
-6 ≤
x
≤ -1
-6 ≤
x
≤ 1
1 ≤
x
≤ 6
x
≤ -6 or
x
≥ -1
x
≤ 1 or
x
≥ 6