Absolute Value 3 + 4i 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 |3 + 4i|

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 = 3 and b = 4, we have:
|3 + 4i| = √a2 + b2
|3 + 4i| = √32 + 42
|3 + 4i| = √9 + 16
|3 + 4i| = √25
|3 + 4i| = 5