If m is a real number and 2x^2 + mx + 18 has two distinct real roots, then what are the possible values of m? Express your answer in interval notation.
2x^2 + mx + 18
If we have two distinct rooots.....then the discriminant must be > 0
So
m^2 - 4(2)(18) > 0
m^2 - 144 > 0
m^2 > 144
The solutions for m are ( -inf, -12) U ( 12 ,inf )
