For the graph of a certain quadratic y=ax^2+bx+c, the vertex of the parabola is (3,7) and one of the x-intercepts is (-2,0) . What is the x-coordinate of the other x-intercept?
For the graph of a certain quadratic y=ax^2+bx+c, the vertex of the parabola is (3,7) and one of the x-intercepts is (-2,0) . What is the x-coordinate of the other x-intercept?
+13 
