codey48ad
codey48ad codey48ad
  • 26-01-2022
  • Mathematics
contestada

and this (4+i)(4-i)
show work so i can understand pls ;-;

Respuesta :

Аноним Аноним
  • 27-01-2022
  • (a+b)(a-b)=a^2-b^2

[tex]\\ \tt\longmapsto (4+I)(4-i)[/tex]

[tex]\\ \tt\longmapsto 4^2-i^2[/tex]

[tex]\\ \tt\longmapsto 16+1[/tex]

[tex]\\ \tt\longmapsto 17[/tex]

Answer Link
dynamike dynamike
  • 27-01-2022

Answer:

17

Step-by-step explanation:

(a+b)(a-b)=a^2-b^2

4^2 - i^2

16 - (-1)

17

i^2= -1

Answer Link

Otras preguntas

Name the color of light that is least effective in photosynthesis.
_______ ordered the construction of the great wall of china.
A map has a scale of 1 cm: 12 km. On this map what is the distance between two locations that are actually 30 km apart?
which of the following is a tip for taking the aspire reading test
What are some consequences of being poor
A fracture of a long bones that has a noticeable bend in the shaft isâ called:
The loss of Arctic sea ice has increased over the last several decades. Which of the following is an impact of decreasing sea ice that would reduce biodiversity
What respiratory system changes occur when someone quits smoking?
need help with some questions please
An early feminist important in advancing the birth control movement in the united states was