Write a possible polynomial equation with the roots 2,i,-i

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.

Graph a point. start at your origin, move left 10 units, and then move up three units which ordered pair is the point you graphed