Question

3i^2 + square root -121 - square root 49

create an equivalent expression in the form of a+bi

Answer 1

please clarify the equation. maybe write in on a paper and post it.

Answer 2

- 10 + 11i

Explanation:

note that i² = (
`√(-1)`)² = - 1

given

3i² +
`√(-121)` -
`√(49)`

= 3(- 1) +
`√(121(-1))` -
`√(49)`

= - 3 + 11i - 7

= - 10 + 11i ← in the form a + bi