#1. which is equal to z3 8? a. (z - 2)(z^2 - 2z - 4). b. (z + 2)(z^2 - 2z + 4) c.(z - 2)(z^2+ 2z + 4). d. (z + 2)(z^2+ 2z - 4) #2. which is equal to x2 + 2x + xy + 2y? a. (x + y)(x - 2) b. (x - y)(x - 2) c. (x - y)(x + 2) d. (x + y)(x + 2) #3. which is equal to x2 + 2x + xy + 2y? a. (x + y)(x 2) b. (x y)(x 2) c. (x y)(x + 2) d.(x + y)(x + 2) #4. which is equal to x^3 - 2x^2 - 49x + 98? a. (x - 7)(x + 7)(x + 2) b.(x + 7)(x - 2) c.(x2 + 49)(x - 2) d. (x - 7)(x + 7)(x - 2) #5. what is the solution set to the equation (x 4)(x + 3) = 0? a. {3, -4} b.{-3, -4} c. {-3, 4} d. {3, 4} #6. what is the solution set to the equation a2 - 25 = 0? a. {-5, 5} b. {-5, -5} c. {0, -5} d. {0, 5}