How do you combine like terms in $(- 2- 3i ) + ( - 8- 2i )$ ?

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Answer 1 · 2017-05-24T22:40:39

$-5i-10$

You have to remember that $i$ represents $sqrt(-1)$ and is a complex number. In this case, combining like terms are the same as with variables.

$(-2-3i)+(-8-2i)$
$=-2-3i-8-2i$
$=-10-5i$

How do you combine like terms in (- 2- 3i ) + ( - 8- 2i )(- 2- 3i ) + ( - 8- 2i )?