• Support PF! Buy your school textbooks, materials and every day products Here!

Roots of a equation with complex numbers

  • Thread starter subopolois
  • Start date
  • #1
86
0

Homework Statement


how do i find the roots of this: x^2-(2-1)x+(3-i)=0


Homework Equations


-b+-sqrtb^2-4ac/2a (quardaric equation)


The Attempt at a Solution


Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
Defennder
Homework Helper
2,591
5
What have you done so far?

And why did you write it as "(2-1)x" and not "x"? Did you mean "(2-i)x" instead? Why can't you just apply the formula?
 
  • #3
86
0
What have you done so far?

And why did you write it as "(2-1)x" and not "x"? Did you mean "(2-i)x" instead? Why can't you just apply the formula?
and what formula would that be?
 
  • #4
Dick
Science Advisor
Homework Helper
26,258
618
and what formula would that be?
Use the 'quadratic equation'.
 
  • #5
HallsofIvy
Science Advisor
Homework Helper
41,833
955
The quadratic formula that YOU gave in your first post! Be careful about taking the square root. That's the only "hard" part.
 

Related Threads on Roots of a equation with complex numbers

  • Last Post
Replies
5
Views
2K
Replies
4
Views
1K
  • Last Post
Replies
1
Views
2K
Replies
3
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
4
Views
2K
Replies
5
Views
9K
  • Last Post
Replies
6
Views
3K
Top