На рисунке изображён график функции f(x) = -x² + bx + c. Найдите значения х, при которых f(x) = -79.

From the graph, the vertex of the parabola is at (0, 1). Thus, the function can be written as f(x) = -x² + 1. We need to solve -x² + 1 = -79. This simplifies to -x² = -80, so x² = 80. Therefore, x = ±√80 = ±4√5.