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

How many Africans did not survive on the slave ships?

*TH GRADER......................

The Runaway Scrape resulted in many residents in the Austin colony heading east to escape Mexican forces. Which event led to the Runaway Scrape? The Battle of S

What percent is 30 out of 50?

What’s the answer to. 10>x/3+6

in a reproducing cell , the dna is found in the structures known as 1. Lysosomes 2. Chromosomes 3. Vacuoles 4. Ribosomes

How many terms are in the given expression? 52 + Zn - 2f

Help me please ?????

Lin and Han's families provide money for their school lunch accounts. • Han starts with $100 in his account. He spends $15 each week on lunches. • Lin starts wi

how do you simplify 11/12 plz explain I don't get it