Question

Simplify (7 – 2i) – (3 + 9i)

Answer 1

This is for imaginary numbers?
I found a great site that explains everything about them:
http://betterexplained.com/articles/a-visual-intuitive-guide-to-imaginary-numbers/

Answer 2

(7 – 2i) – (3 + 9i)
= 7 - 2i - 3 - 9i
= 7 - 3 -2i - 9i
= 7 - 3 - (2+9)i
= ...?

Answer 3

4-11i

Answer 4

= 4-11i

Answer 5

Yes :)

Answer 6

can you help me on another one?

Answer 7

My pleasure~

Answer 8

\[9/(7-3\sqrt{3})-(6-4\sqrt{3})\]

Answer 9

Is this your question?
\[\frac{9}{(7-3\sqrt3) - (6-4\sqrt3)} \]