foxpower0519 foxpower0519

04-05-2020
Mathematics

contestada

When you multiply (3+6i)(3+7i) you get an answer of the form a+bi. Find a.

Respuesta :

OfficialRoytriever OfficialRoytriever

04-05-2020

(3 + 6i)(3 + 7i)

FOIL: First, Outside, Inside, and Last

3 x 3 = 9

3 x 7i = 21i

6i x 3 = 18i

6i x 71= 42i

9 + 21I + 18I + 42I = 9 + 81I

a = 9

B = 81I

Answer Link

Otras preguntas

Send help, and fast...

Why does egypt have so many tombs and mummies.

What are the signs of high inflation?.

representative who proposed an amendment that would limit slavery in missouri

Polling Station This Way What is the purpose of this sign?

What is one of the civilizations that are the base of Oaxaca ?

Why was a bill of rights proposed for the United States constitution?

Select the correct answer. A new airline airplanes with two different seating configurations and has a policy where customers are randomly assigned seats. NO LI

what are the steps leading to a cell becoming cancerous

How to derive the formula for centripetal acceleration.