A: what are the solutions to the quadratic equation 9x2+64=0?

b: what is the factored form of the quadratic expression 9x2+64?

select one answer for question a, and select one answer for question b.

b: (3x+8i)(x−8i)
b: (x−8)(3x−8)
b: (3x−8)(3x+8)
b: (3x−8i)(3x+8i)
a: x=83 or x=−83
a: x=−83i
a: x=83i or x=−83i
a: x=83