Question

☆pls help no one has helped me and I'm so confused! ​

Answer 1

Explanation:

a).
`(5\pm√(-4))/(3)` =
`(5)/(3)\pm (√(-4))/(3)`

=
`(5)/(3)\pm(2√((-1)) )/(3)`

=
`(5)/(3)\pm(2i)/(3)` [Since, i =
`√((-1))`]

b).
`(10\pm√(-16))/(2)` =
`(10)/(2)\pm (√(-16))/(2)`

=
`5\pm (4√(-1))/(2)`

= 5 ± 2i [Since, i =
`√((-1))`]

c).
`(-3\pm √(-144))/(6)` =
`-(3)/(6)\pm (√(-144))/(6)`

=
`-(3)/(6)\pm (12√(-1))/(6)`

=
`-(1)/(2)\pm 2√(-1)`

=
`-(1)/(2)\pm 2i` [Since, i =
`√((-1))`]