Question

Find the modulus of conjunction of the complex number z= -3-4i is

Answer 1

Answer:

z conjugate = - 3 + 4i

so its modulus =

$\sqrt{ {( - 3)}^{2} + {4}^{2} } = \sqrt{25} = 5$

Answer 2

Answer:

Z= -3-4i

x=-3 and y=-4

r=√x^2+y^2

r=√-3^2+(-4) ^2

=√9+16

=√25

r=5

hence, modulus is 5.