1. The problem statement, all variables and given/known data Given that the quadratic equation (m^2-3m-4)x^2+(m^2+2)x+12=0 has real roots a and b .Find the set of values of m such that a<-1<b 2. Relevant equations 3. The attempt at a solution By using the fact this equation has two real roots ,b^2-4ac>0.That's all i can see from this problem. Some other hints..