Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.
2, 10, 50, ...

Write the expression 7x^3-28xy^2 as the product of 3 factors

Factor and solve to find roots x squared -x - 90 =0

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set. a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}