Lets say P and Q are both complex numbers . The modulus of P and Q are 1 and 2 respectively .

The question is find the modulus for the complex numbers a , b and c with

$\displaystyle a=p^4$ ,$\displaystyle b=q^2$ , $\displaystyle c=-ip $

so $\displaystyle |a|=|p|^4 = 1^4 =1 $

$\displaystyle

|b|=|q|^2 = 2^2

$

Am i right in saying that ???