Chapter 4 - Quadratic Functions - 4.6 Solving Quadratic Equations by Using the Quadratic Formula - 4.6 Exercises - Page 374: 77

$(-4,12)$, $(3,12)$.

The table in the problem shows that the points, $(x,y) = (-4,12)$ and $(x,y) = (3,12)$ are common to both functions, $Y_1$ and $Y_2$. These points are the points of intersection between the functions and must be the solution.