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

Give an example of where you use pressure in your daily life?
Francesca reads 57 pages every 2 h. How many pages can she read in 5 h?
After World War II, the Soviet Union turned many of the countries of Eastern Europe into _____states.
Is there a credible scientific theory that opposes evolution?
what is an equation using 2,3,5,8 once that equals 104
A drinking glass is shaped like a cylinder with a height of 12 cm and a radius of 4 cm. Maeva adds 25 spherical pieces of ice to the glass. The pieces of ice ea
What is an invasive species?
Which of the following is NOT true of a savings account? The account owner can make only three withdrawals a month. It requires a minimum deposit. It pays less
Yes or no? 1) diagonals of a rhombus are equal? 2) rectangles are parallelograms 3) diagonals of a rectangle bisect the angles? 4) a parallelogram has adjacent
In A Midsummer Night's Dream, after Bottom returns from wandering alone in the woods, why do his fellow workmen A. Puck has cast a spell on Bottom and given him