Hello

I performed xtreg y x x , fe regression to test the relationship between profit and cash holdings between large and small firms. for large firms the relation is quadratic, but for small firms, the quadratic relation does not exist. I would like to interpret the economic significance of my results and find it challenging. Thank you very much for your support.
Large Firms Small Firms
-1.115*** -0.681***
(0.18) (0.21)
1.936*** -0.206
(0.51) (0.55)