A soccer ball is kicked into the air. Its path is modelled by the function h(t) = –5t2 + 15t, where h(t) is the height in metres and t is the time in seconds. When will the soccer ball hit the ground?
Solve by factoring x2 = 12x
X = –12, 0
X = 0, –12
X = –2, 0
X = 0, 12
A roofer throws a group of shingles into the trash bin on the ground below. The height of the shingles can be modelled by the function h(t) = –5t2 + 11t + 12, where h(t) is the height in metres, and t is the time in seconds. How long will it take the shingles to hit the bottom of the trash bin?
For which quadratic equation is x = 2 a root of the equation?