Question

How do you simplify `7( - 8+ 7i ) + ( 6i ) ( 2i )`?

Answer 1

`-68+49i`

Explanation:

Multiply `(-8+7i)` by 7 to remove brackets:

`-56+49i`

`(6i)(2i)=6xx2xxi^2`

`i^2=-1`

So:
`(6i)(2i)=6xx2xxi^2=-12`

`-56+49i-12=-68+49i`