Solve the equations by completing the square.
x^2-8x-84=0

Quadrilateral ghjk has vertices g(2, 3), h(8, 2), j(6, 8), and k(3, 6). it is transformed according to the rule t(–4, –5). what are the coordinates of g”? (–7, 3) (–2, 2) (–1, –7) (2, –2)

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?