X^4 - 1 =
a. (x+1)(x-1)(x^2+1)
b. ( x+1)^2(x-1)^2
c. (x+1)^3(x-1)^1
d. (x-1)^4

Abilliard ball is struck by a cue. it travels 1 0 0 cm 100cm before ricocheting off a rail and traveling another 1 2 0 cm 120cm into a corner pocket. the angle between the path as the ball approaches the rail and the path after it strikes the rail is 4 5 ∘ 45 ∘ . how far is the corner pocket from where the cue initially struck the ball? do not round during your calculations. round your final answer to the nearest centimeter.