Which expression makes the equation true for all values

16x-16=4(_)

be detailed

How do i do this using elimination 2x+3y=12 x-y=6

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

How do you do the foil method with polynomials?