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**sologuitar****Member**- Registered: 2022-09-19
- Posts: 467

Find k such that the equation kx^2 + x + k = 0.

Let me see.

The discriminant is b^2 - 4ac

Let b = 1

Let a = k

Let c = k

(1)^2 - 4k + k = 0

Solving for k, I get 1/3.

Is this correct?

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**amnkb****Member**- Registered: 2023-09-19
- Posts: 175

sologuitar wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

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**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,863

hi amnkb

Yes, I did that too. But it doesn't tell what k is. There must be more to this question surely. eg. If x has a single solution what is k?

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

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**amnkb****Member**- Registered: 2023-09-19
- Posts: 175

Bob wrote:

hi amnkb

Yes, I did that too. But it doesn't tell what k is. There must be more to this question

i agree

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**sologuitar****Member**- Registered: 2022-09-19
- Posts: 467

amnkb wrote:

sologuitar wrote:Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

This does not lead to the value of k. I think the discriminant is needed here to find k. What else can it be?

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**sologuitar****Member**- Registered: 2022-09-19
- Posts: 467

amnkb wrote:

Bob wrote:hi amnkb

Yes, I did that too. But it doesn't tell what k is. There must be more to this question

i agree

The question has been presented as found in the textbook. I don't think I'm wrong about using the discriminant to find k.

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**amnkb****Member**- Registered: 2023-09-19
- Posts: 175

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

bob- heres the rest of the question-->

solo- sorry

*Last edited by amnkb (2023-11-16 19:12:31)*

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**sologuitar****Member**- Registered: 2022-09-19
- Posts: 467

amnkb wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

bob- heres the rest of the question-->

solo- sorry

You got it right. Thank you.

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