SOLUTION: Absolute Value of complex numbers Solve the following: 1) If z=3-4i then |z|= 2) If z=8-sqrt(39i) then |z|= Any help is very much appreciated!

SOLUTION: Absolute Value of complex numbers Solve the following: 1) If z=3-4i then |z|= 2) If z=8-sqrt(39i) then |z|= Any help is very much appreciated!

Algebra.Com

Question 394198: Absolute Value of complex numbers
Solve the following:
1) If z=3-4i then |z|=
2) If z=8-sqrt(39i) then |z|=
Any help is very much appreciated!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1) If z=3-4i then
|z|= sqrt[3^2 + 4^2] = sqrt[25] = 5
------------------------------------------
2) If z=8-sqrt(39)i then
|z|= sqrt[8^2+ sqrt(39)^2]
= sqrt[64+39]
= sqrt(103)
= 10.15
============
Cheers,
Stan H.

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