SOLUTION: Determine the exact value(s) of k such that (k+2)x^2 −6 = kx −1 has one solution. I need help asap thank you!!!!

Question 1177949: Determine the exact value(s) of k such that (k+2)x^2 −6 = kx −1 has one solution.
I need help asap thank you!!!!
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Determine the exact value(s) of such that has one solution.

=> , ,
use discriminant:
If discriminant,, two solutions exist.
If discriminant, , one solution exists.
If discriminant, , no solution exists
so, you need:
....substitute ,, and

.........using quadratic formula, we get

-> has one solution
or

-> has one solution

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