SOLUTION: What is the absolute value of 1-8i ?

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Question 809384: What is the absolute value of 1-8i ?
Found 2 solutions by Edwin McCravy, edjones:
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!

|a+bi| = √a²+b²

|1-8i| = √(1)²+(-8)² = √1+64 = √65

Edwin

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
|a+bi|=sqrt(a^2+b^2)
|1-8i|
=sqrt(1^2+(-8)^2)
=sqrt(1+64)
=sqrt(65)
.
Ed