# Math Help - Find k

1. ## Find k

Find a number k such that the given equation has exactly one solution.

kx^2 + 24x + 16 = 0

2. Originally Posted by sologuitar
Find a number k such that the given equation has exactly one solution.

kx^2 + 24x + 16 = 0
A quadratic equation will have exatly one solution when the discriminant is equal to zero.

The discriminant is $b^2-4ac$ when the quadratic is in standard form.

Just plug is $a=k,b=24,c=16$ and set equal to zero and solve.

3. ## Thanks...

Originally Posted by TheEmptySet
A quadratic equation will have exatly one solution when the discriminant is equal to zero.

The discriminant is $b^2-4ac$ when the quadratic is in standard form.

Just plug is $a=k,b=24,c=16$ and set equal to zero and solve.
That's very easy to do. Thanks.