Answer:
[tex]4+2 i[/tex]
Step-by-step explanation:
[tex]i=\sqrt{-1}[/tex]
[tex]4+\sqrt{-4} =4+\sqrt{-1} * \sqrt{4} =4+i2[/tex]
the expression of number 4+√(-4) in
a+bi
form is 4+2i
