Question

What is the absolute value of the number?
3 + i


*square root* 10
4
8
*square root* 3


( i think its the last , but im not sure ? )

Answer 1

Is he number a negative or positive?

Answer 2

if \(z=a+bi\) then
\[ \large |z|=\sqrt{a^2+b^2} \]

Answer 3

the*

Answer 4

@andreascott you thought correct

Answer 5

thanks @soty2013

Answer 6

it is not the fourth choice.

Answer 7

use the definition i posted