Asap
a: what are the solutions to the quadratic equation 4x2+25=0?
b: what is the factored form of the quadratic expression 4x2+25?
select one answer for question a, and select one answer for question b.

b: (x−2i)(x+5i)
b: (2x−5i)(2x+5i)
b: (x−52i)(x+25i)
b: (2x−5i)(2x−5i)
a: x=52i or x=−52i
a: x=2i or x=5i
a: x=−52i
a: x=52i