Solve x2 + 9x + 9 = 0. (2 points)

a
quantity of negative 9 plus or minus 3 square root of 5 all over 2

b
quantity of 9 plus or minus 3 square root of 5 all over 2

c
quantity of negative 9 plus or minus square root of 117 all over 2

d
quantity of 9 plus or minus square root of 117 all over 2