let z1=2-3i^7 , z2=3-5i^-3 . Find : a) |z1|,|z2| b) |z1.z2| c) show that |z1.z2|=|z1||z2|

Question

let z₁=2-3i⁷ , z₂=3-5i^-3 . Find : a) |z₁|,|z₂|         b) |z₁.z₂|           c) show that |z₁.z₂|=|z₁||z₂|

Answer 1

z₁ = 2 -3i⁷

z₁ = 2 - 3(-i)

z₁ = 2 + 3i

|z₁|= √(2² + 3²)

 

Can you complete?