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

1. Find SP when: (a) CP=920 and gain = 6% EXE

what were a couple of tribes that were removed from the southeast united states to the lands west of the Mississippi

If you choose to live alone, you must pay all your cable and utility bills. If you choose to have roommates, you can share those expenses. Keep in Mind If you a

A reaction yields 8.77 g of a product. What is the percent yield if the theoretical yield is 14.80 g?

Toru takes his dog to be groomed. The fee to groom the dog is $75 plus 6.75% tax. Is $80 enough to pay for the service? Explain.

According to the theory of plate tectonics, what drives the motion of the continents?

Write an equation of the line that passes through given points. (0,-3),(3,3)

Determine the real root(s), if any,of the quadratic function shown below

Please help me asap!!!

Rain water which falls on a flat rectangular surface of length 6m and breadth 4m is transferred into a cylindrical vessel of internal radius 20 cm. What will be