Answer:
- 10 + 11i
Step-by-step explanation:
note that i² = ([tex]\sqrt{-1}[/tex])² = - 1
given
3i² + [tex]\sqrt{-121}[/tex] - [tex]\sqrt{49}[/tex]
= 3(- 1) + [tex]\sqrt{121(-1)}[/tex] - [tex]\sqrt{49}[/tex]
= - 3 + 11i - 7
= - 10 + 11i ← in the form a + bi
