CPM Homework Help : CCA2 Problem 11-90

Solve the system of equations below.

$x^2 + y^2 = 16$
$y = x^2 - 4$

Hint:

Circle, centered at the origin, going through the point (0, comma 4), & an upward parabola, vertex at the point (0, comma negative 4).

More Help:

Note that based on the graph, there will be three real solutions.