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Roots of equation

  • Thread starter Paulo2014
  • Start date
  • #1
81
0

Homework Statement


Find the range of values of k for which the roots of the equation
are not real.



Homework Equations


y = x2 + (k - 2) x + (k + 3)


The Attempt at a Solution


I have no idea...

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
761
13
Look at the discriminant.
 
  • #3
tiny-tim
Science Advisor
Homework Helper
25,832
249
Look at the discriminant.
Or complete the square (same result, obviously) :smile:
 

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