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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,118

No.

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

x^2

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

Yes.

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

a = 1, b = 5, c = 6

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

Show me

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

Got -2 and -3?

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

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

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 3,118

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

I wish I was in Dixie, Hooray! Hooray!...

"Non tutte le ciambelle riescono col buco.”

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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: 544

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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