Question

Which complex number has an absolute value of 5?
-3 + 4i
2 +3i
7-2i
9 +4i

Answer 1

Answer: -3 + 4i

Step-by-step explanation: Square both numbers, add them, then find the square root. Essentially, use the Pythagorean theorem. -3^2 + 4^2 9 + 16=25 Square root of 25 is 5

Answer 2

-3+4i

Explanation:

on a graph the complex number is (-3,4) The magnitude is -3^2+4^2=c^2

c=5 when solved