How do you simplify $(3-5 i)+(-2-7i)$ ?

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Answer 1 · 2015-12-07T12:18:53

$1-12i$

Combine like terms. In this scenario, you can add integers with integers, and imaginary numbers with imaginary numbers.

$(color(blue)(3)color(green)(-5i))+(color(blue)(-2)color(green)(-7i))$

$(color(blue)(3+ -2))+(color(green)(-5i+ -7i))$

$color(blue)1color(green)(-12i)$

How do you simplify (3-5 i)+(-2-7i)(3-5 i)+(-2-7i)?