- #1
MadmanMurray
- 76
- 0
Homework Statement
1.)
a.) If the roots of equation px2 - 4x + 1 are equal then find value of p
b.) Prove that the equation (k - 2)x2 + 2x - k = 0 has real roots (upside down A symbol) k E R
Homework Equations
The Attempt at a Solution
I just don't know how to approach these questions. For a.) it says roots are equal meaning there's only 1 root but how do I find out what that root is if I have a constant in there?
For b.) I have the same problem. I would usually plug an equation into the quadratic formula to find out if it has real roots but in this case there's a constant so I'm lost. Do I have to find this constant first and if so how?