Find the equation of the axis of symmetry of the graph of y = (x + 3)^2 - 5 + (x + 7)^2 - 15.
Expand and simplify to get
2x^2 + 20x+38 = f(x)
roots ....via quadratic formula are -5 +-sqrt6 axis if symmetry is x = -5
+37159 
