Carla and Jordan were trying to solve the equation: (x+1)(x-1)=8 Carla said, "I'll multiply (x+1)(x-1) and rewrite the equation as x^2-1=8x 2 −1=8x 8. Then I'll add 1 both sides and take the square root." Jordan said, "The left-hand side is factored, so I'll use the zero product property."