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

• (6) Mention the role of School Children to reduce nois Pollution​
if a+1/a=3What is the answer? a⁵+1/a⁵​
Prove that angle ADC is congruent to angle CBA with solution!
the pulmonary arteries have light violet blood why?​
What is a peer group? people from the same culture people who have nothing in common people of similar age, who share similar interests people in one’s biologic
what were the strategies used by british to rule the indian countryside?
A manufacturer of a variety of technological devices asked its marketing department to develop inexpensive methods of building and maintaining brand awareness a
Think about race relations in your home country or another country. How would you describe them in the present? In the past?
¿Crees que Hansel y Gretel fueron solidarios? ¿Por qué? el tema es religion crats
Please help me ASAP?!!!!!