melissabretz21 melissabretz21
  • 01-05-2022
  • Mathematics
contestada

Which of the following products yield a real number? Select all that apply.

Which of the following products yield a real number Select all that apply class=

Respuesta :

ghaithgh
ghaithgh ghaithgh
  • 01-05-2022

Answer:

The choice 4 and 6 ;

[tex]7i(7i)[/tex]

and

[tex](9 + 3i)(9 - 3i)[/tex]

Step-by-step explanation:

[tex]7i(7i) = 49 {i}^{2} = - 49[/tex]

__o_o__

[tex](9 + 3i)(9 - 3i) \\ = 81 - 27i + 27i - 9 {i}^{2} \\ = 81 + 9 \\ = 90[/tex]

Answer Link

Otras preguntas

What is the supreme law of the land?
A staple is made from 40mm of wire. How many staples can be made from 10meters of wire?
There were 13 original states. Name three.
What is one right or freedom from the First Amendment?*
A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine
Name one U.S. territory
Can someone help me match these up? i know the given is number one I need help with the rest.1.line RS || segment AB, ∠1=∠22.∠B = ∠13.∠A = ∠24.∠A = ∠B5.RA = RBA
What is freedom of religion?
We elect a President for how many years?
When an excited electron in an atom moves to the ground state, the electron (1) absorbs energy as it moves to a higher energy state (2) absorbs energy as it mov