2x + 1/x + 2 > 0, is the result S = {x R | x ≤ -2 or x > -½} is same compared to this: ]-∞, -2[ ]-1/2, +∞[ ?
R | x ≤ -2 or x > -½} is same compared to this: ]-∞, -2[ 
]-1/2, +∞[ ?
