Answer:
3[tex]\sqrt{5}[/tex]
Step-by-step explanation:
The absolute value of
| a + bi | = [tex]\sqrt{a^2+b^2}[/tex]
Given
6 - 3i, then
| 6 - 3i |
= [tex]\sqrt{6^2+(-3)^2}[/tex]
= [tex]\sqrt{36+9}[/tex]
= [tex]\sqrt{45}[/tex]
= [tex]\sqrt{9(5)}[/tex]
= [tex]\sqrt{9}[/tex] × [tex]\sqrt{5}[/tex]
= 3[tex]\sqrt{5}[/tex]
