Solve by completing the square

x^2-6x-16=0

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

If you answer right ill give brainliest, : )

Consider a= {x|x is alive} f={x|x is in france} m={x|x is a national monument} w{x|x is a woman}. which statements are true regarding elements of the given sets? check all that apply.