SOLUTION: i need to know these answers ASAP please is for a math thing i have to pass it |2i| |5 + 12i| |2 - 2i| |1 - 4i| |3 - 6i|

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: i need to know these answers ASAP please is for a math thing i have to pass it |2i| |5 + 12i| |2 - 2i| |1 - 4i| |3 - 6i|       Log On


   

Question 190987: i need to know these answers ASAP please is for a math thing i have to pass it
|2i|
|5 + 12i|
|2 - 2i|
|1 - 4i|
|3 - 6i|
Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
The modulus of the complex number a+bi is
|a+bi| = sqrt%28a%5E2%2Bb%5E2%29
So
|2i|= |0+2i| = sqrt%282%5E2%2B0%5E2%29= sqrt%282%5E2%29= 2
|5 + 12i|= sqrt%285%5E2%2B12%5E2%29= sqrt%28169%29= 13
|2 - 2i| = sqrt%282%5E2%2B%28-2%29%5E2%29= sqrt%288%29= 2sqrt%282%29
|1 - 4i| = sqrt%281%5E2%2B%28-4%29%5E2%29= sqrt%2817%29