View Single Post
Dec10-11, 01:18 AM
P: 37
1. The problem statement, all variables and given/known data
The equation kx2 - 3x + (k+2) = 0 has two distinct real roots. Find the set of possible values of k.

2. Relevant equations
Since the equation has two distinct real roots, b2 - 4ac > 0

3. The attempt at a solution
9-4(k2+2k) >0
= -4k2-8k+9>0
Multiply both sides by -1,


However the answer is -2.46<k<0.458
I'm lost, help please!
Phys.Org News Partner Science news on
Fungus deadly to AIDS patients found to grow on trees
Canola genome sequence reveals evolutionary 'love triangle'
Scientists uncover clues to role of magnetism in iron-based superconductors