What TWO numbers add up to -9 but also multiply out to -10?

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

The graph of a curve that passes the vertical line test is a:

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?