Absolute Value 5 + 3i and 3 + -7i

a = bi = <-- Enter a and bi piece
c = di = <-- Enter c and di piece (not needed for square root or absolute value or conjugate)

Evaluate the absolute value of the complex number |5 + 3i|

The absolute value of a complex number is the distance from 0 to that number on the imaginary plane
|a + bi| = √a2 + b2
Given a = 5 and b = 3, we have:
|5 + 3i| = √a2 + b2
|5 + 3i| = √52 + 32
|5 + 3i| = √25 + 9
|5 + 3i| = √34
|5 + 3i| = 5.3