Answer:
- 84 + 10i
Step-by-step explanation:
A complex number in standard form is a ± bi
a is the real part and bi the imaginary part
and [tex]\sqrt{-1}[/tex] = i
Given
[tex]\sqrt{-100}[/tex] - 84
= [tex]\sqrt{100(-1)}[/tex] - 84
= [tex]\sqrt{100}[/tex] × [tex]\sqrt{-1}[/tex] - 84
= 10i - 84
= - 84 + 10i ← in standard form
