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 do landforms affect human life

which act stated that parliament did have right to tax colonist

Cuneiform is a. a Sumerian form of writing b. a Persian invention c. a Lydian invention d. an Egyptian form of writing

Leah has some lessons stan's driving school. The total cost of the lessons is £305.50

Solve for x. 2x^2+12x+11-(x+4)^2

which two countries fought over cyprus

Which sentence does NOT correctly fix this run-on sentence? The car skidded luckily no one was near it. a. The car skidded, but luckily no one was near it. b. T

A magazine contains 7/12 articles the rest are adverts. If there are 204 pages in the magazine how many pages are adverts? Need answer ASAP!!!

how do you solve 6x minus 2 equals 12x plus 7

Emma pays $25/month as installments for a T.V screen. How many months will she take to pay a total of $900 in installments?