SOLUTION: Simplify and write the complex number in standard form. (9 + 6i)(4 − 6i)

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Question 1131536: Simplify and write the complex number in standard form.
(9 + 6i)(4 − 6i)
Answer by ikleyn(52835) About Me  (Show Source):
You can put this solution on YOUR website!
.
FOIL following usual rules for the product of two binomials  (9+6x)  and  (4-6x).

Then combine the like terms with  " i "  and replace i%5E2 by  (-1).


Then combine like terms (real parts) again.

That's all.