Question

find the modulus of (3+2i)³​

Answer 1

apply whole cube formula

3³+3*3²*2i+3*3*2²i²+i³

=27+54i-36+i²*i

= -9+54i-i

= -9+53i

therefore, modulus _

√{(-9)²+(53)²}

=2890

Hope this will help you