Question: how to solve an binomial?
Answer: Set each individual equation equal to zero to get x - 2 = 0 and x^2 + 2x + 4 = 0. Solve each equation to get a solution to the binomial. For x^2 - 9 = 0, for example, x - 3 = 0 and x + 3 = 0. Solve each equation to get x = 3, -3.