Let a = {x | X & # 178; + (M + 2x) + 1 = 0, X ∈ r}, B = {x | x > 0}, if a ∩ B = & # 8709;. Find the value range of real number M Let a = {x | X & # 178; + (M + 2) x + 1 = 0, X ∈ r}, B = {x | x > 0}, if a ∩ B = & # 8709;. Finding the value range of real number m

Let a = {x | X & # 178; + (M + 2x) + 1 = 0, X ∈ r}, B = {x | x > 0}, if a ∩ B = & # 8709;. Find the value range of real number M Let a = {x | X & # 178; + (M + 2) x + 1 = 0, X ∈ r}, B = {x | x > 0}, if a ∩ B = & # 8709;. Finding the value range of real number m

When the set a is an empty set, the intersection of a and B is an empty set, and the quadratic equation x ^ 2 + (M + 2) x + 1 = 0 has no real root, that is, the discriminant (M + 2) ^ 2-4