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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

No.

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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What is 1*x^2 = ?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

x^2

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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Can we say that the coefficient of x^2 in x^2 is 1, then?

*Last edited by Agnishom (2014-10-27 20:08:07)*

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

Yes.

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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Agnishom wrote:

Well, it is.

Is x^2+5x+6 of that form?

Compare x^2+5x+6 with the ax^2 + bx + c form?

What is the value of a, b and c in this case?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

a = 1, b = 5, c = 6

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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Agnishom wrote:

Okay let me write down the formula here!

What is the value of a,b and c in this equation: x^2 +5x+6 =0?

Now plug the values in these two formulae and simplify.

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

Show me

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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Use the two formulae and substitute a=1, b=5, c =6 in them

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

Got -2 and -3?

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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That is very good!

Please try solving the same equation as taught in school by hand. Do your answers match?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

I don't know how to solve it...

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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How do you do it in school then?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,144

I don't know, maybe you could show me.

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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One way to solve a quadratic equation is to use the formulae I gave you.

Can you middle-term factorise a quadratic polynomial?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 818

David, I recommend you to read every topic on quadratic equations from mathisfun.com. I see you don't know about it. It is very much required in mathematics. Please do it quickly.

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

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