Question

Simplify (9 − 5i) − (4 + 10i). (1 point) −10 5 − 15i 5 + 5i 20

Answer 1

(9 -5i) - (4 +10i)

= 9 -5i -4 -10i

= 5 -15i

Answer 2

`5-15i`

Explanation:

Simplify (9 − 5i) − (4 + 10i)

`(9 - 5i) - (4 + 10i)`

To subtract we multiply the negative sign inside the second parenthesis

`9 - 5i - 4 - 10i`

Now combine like terms

`-5i-10i=-15i`

`9-4=5`

`(9 - 5i) - (4 + 10i)=-15i+5`

We write it in a+ib form

`5-15i`