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

What constitutional principle did the supreme court establish in the McCulloch case

How to calculate 100MB at 56 Kbps to transfer time?

Write five names for 64 .

How many seismic stations are needed to determine the location of an earthquake's epicenter?

2x+8=22 how do I figure out the answer to problem 2x+8=22 ?

plz help with this french hw plzzz

rename the number4 thousand 7 hundreds = 47

What is 258/300 written as a decimal and a percent???

what evidence shows that sumerians where not prehistoric

There are 30 students in a class that took a test. The average grade of 10 students was 80. The other 20 students average was 89. What is the overall average fo