p18johnsonj p18johnsonj

15-03-2018
Mathematics

contestada

What is the standard form of (1 + 7i)(3 − i)?

Respuesta :

evgeniylevi evgeniylevi

15-03-2018

Consider this option:
1. if the standard form is z=x+iy, then
2. (1+7i)(3-i)=1*3-1*i+21i-7i*i=3-i+21i+7=10+20i

answer: 10+20i

Answer Link

Otras preguntas

There are 12 peaches in a carton. The mean mass of all the peaches is 175 grams. What is their total mass?

a store pays $10 for a bracelet,and the markup is 115%

Which statement best summarizes the major difference between the social gospel movement and the evangelicals of the Gilded Age?

What approaches to meeting the challenge of the depression was president Hoover against?

how many soldiers were lost at the Battle of Somme, Verdun & Ypres

How did the Thirteenth Amendment expand the rights of African Americans? A. By establishing separate-but-equal schools B. By eliminating poll taxes and literacy

lila decided to make more baked goods for bake sale.She uses 1/8 lb less to make bread than to make cookies. She used 1/4 lb more flour to make cookies than to

What is the decimal for 1/3

How does smoking impact the respiratory system?

How was the monetary system dealt with under the Articles of Confederation? a. In the confederal system, each state dealt with its own monetary system. b. The f