Identify the choice that best completes the statement or answers the question.
1. Solve 2x ^ 2 + 4x + 2 = 0 by graphing the corresponding function and determining the zeros.
a. x = 1 x-1
b. x = - 1 x = - 1
c. x-0,x--1
d. x = 1, x = - 1
2. Solve x ^ 2 - x - 6 = 0 by factoring.
a. x x = 2
b. x = 2, x = - 3
c. x = - 3 x = - 2
d. x = 3x = - 2
3. Solve 2x ^ 2 + 9x - 5 = 0 by factoring.
a. x = - 0.5, x = 5
b. x=0.5. x = - 5
c. x = 2 x = 9
d. There are no solutions.
4. Solve 12x ^ 2 + 11x = - 2 by graphing the expressions on both sides of the equation.
a. x = 2x = 4
b. x = - 0.667 x = - 0.25
c. x = 0.667 x = 0.25
d. x = - 2 x = - 4
5. Solve 4x ^ 2 + 4x - 5 = 0 using the quadratic formula.
a. x = - 2.76 , x = - 5.22
b. x = - 0.72 x = 1.72
c. x = 0.72 x = - 1.72
d. There are no solutions.