Maths-
General
Easy
Question
In the given equation, 
is a constant. If the equation has exactly one solution, what is the value of c ?
- -2
- 0
- 1
- 2
The correct answer is: 1
The general form of quadratic equation is 
and a quadratic equation has one solution when the discriminant is zero. From an algebra standpoint, this means 
.
Explanations:
Step 1 of 2:
We have
Here, 
, 
.
Step 2 of 2:
Putting the values of 
and 
in , we get
Final Answer:
The value of c is — 1.
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