You can put this solution on YOUR website! m^2-3m-54 < 0
Since the leading term is positive the parabola opens upwards. After factoring...
(m+6)(m-9) < 0
Using the vertex formula we see that min is at -b/2a=3/2 we know the expression is negative between -6 and 9...
Solution interval:
(-6,9)
