How do you simplify $(4+2i) - (5-3i)$ ?

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Answer 1 · 2016-01-09T22:41:20

$-1+5i$

Complex numbers can be added like any others—just think of the $i$ as any other variable.

Distribute the negative sign.

$4+2i-5+3i$

Combine the like parts.

$color(red)(4-5)$ $color(blue)(+2i+3i)$

$-1+5i$

How do you simplify (4+2i) - (5-3i)(4+2i) - (5-3i)?