Question

in expression 4+√-8 how to take out minus sign?​

Answer 1

Answer:

minus sign cannot be taken out.

Step-by-step explanation:

this can only be written in the form of imaginary numbers (i = √-1)

4+√-8 => 4+(√8 × √-1) => 4+2√(2) i

as √8 = √(4×2) = 2√2