SOLUTION: what is the absolute value of -8+4i?

Algebra ->  Absolute-value -> SOLUTION: what is the absolute value of -8+4i?       Log On


   

Question 934483: what is the absolute value of -8+4i?

Found 2 solutions by Fombitz, BigToosie:
Answer by Fombitz(32388) About Me  (Show Source):
Answer by BigToosie(32) About Me  (Show Source):
You can put this solution on YOUR website!
absolute value symbol will be denoted [ ]
-8+4i =
[z] = [-8+4i]
= sqrt (-8)^2 + (4)^2
= sqrt 64+16
=sqrt 80
= 4 sqrt 5