Pammie123cakess Pammie123cakess

04-06-2014
Mathematics

contestada

how do I solve (3+i)(3-i)

Respuesta :

kate200468 kate200468

04-06-2014

[tex] (3+i)(3-i)=3(3-i)+i(3-i)=9-3i+3i-i^2=9-(-1)=\\\\=9+1=10[/tex]

Answer Link

05-06-2014

(3+I)(3-1)
-i^2+9=0
-I^2=-9
I^2=9
i= + or - 3

Answer Link

Otras preguntas

What times what equals 81

Please help me use the words persecute and boycott in a sentence about the American colonies.

Write a comparison sentence to represent this equation 6x7=42

what happens during glycolysis

The length of a side of a square is 5x+2 units. Assuming the perimeter is 48 units, what is the area of the square?

5 ways you can tell a living thing from a nonliving thing

How do u write 0.326 in two forms

Death Valley, California, is 282 feet below sea level. Represent this altitude as an integer. I got -282. Am i correct?

Susan Constant was an?

Which is not a property of a mineral? a. hardness b. diffraction c. cleavage d. luster