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#51 2013-07-21 03:19:04

EbenezerSon
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Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Okay I would try and do thanks.


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#52 2013-07-21 03:20:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

Let me know how you do.

If you need it:


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#53 2013-07-21 04:03:38

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

I had: x^2-1/x^3 -2x^2 +x.

I dont understand  how you got -x^2 +1. As the numerator.

Please, let me know how you got it.
Thanks

Last edited by EbenezerSon (2013-07-21 09:28:37)


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#54 2013-07-21 14:54:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

Hi;

I did not get that as the numerator. I got x + 1 as the numerator. I just multiplied. Do you need help with that?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#55 2013-07-22 04:15:08

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Yes,


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#56 2013-07-22 04:17:49

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

Do you know FOIL?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#57 2013-07-22 04:26:54

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

I havent heard nor seen that before.


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#58 2013-07-22 04:29:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

It is an acronym and it means First, Outer, Inner and Last. Want to try this one using it?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#59 2013-07-22 04:36:18

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Yes, Sir.
I am ever ready!


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#60 2013-07-22 04:47:00

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

We have:

We use FOIL to multiply it.

F means First, so we take the first term of each one and multiply them.


What is the answer?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#61 2013-07-22 05:11:05

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

=x^2


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#62 2013-07-22 05:16:27

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

That is correct, hold on to that.

Now for O which means outer:

What do you get?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#63 2013-07-22 05:33:39

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

= -x^1


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#64 2013-07-22 05:38:14

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

That is correct, now hold on to that.

I, means inner:

What do you get?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#65 2013-07-22 05:50:02

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

=x^1


I know only one thing - that is that I know nothing

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#66 2013-07-22 05:53:24

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

That is correct a mundo!. Hold on to that.

We are almost done! L means last.

What do you get?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#67 2013-07-22 06:03:02

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

X^0 = 1.


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#68 2013-07-22 06:07:11

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

Wrong sign!


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#69 2013-07-22 06:15:56

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Please, let me know I an wrong


I know only one thing - that is that I know nothing

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#70 2013-07-22 06:18:31

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

You added the exponents correctly but what about that - in front of the second term?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#71 2013-07-22 06:35:09

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Errr okay, I see it should be -x^ 0= 1. Is that correct?


I know only one thing - that is that I know nothing

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#72 2013-07-22 06:36:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

Hi;

- x^0 = -1


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#73 2013-07-22 06:39:19

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

But sir, I think the negative sign is affecting the 'X' and not its power, please could you explain?

Last edited by EbenezerSon (2013-07-22 06:40:35)


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#74 2013-07-22 06:41:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,571

Re: Simplify the following:

-(x^0) is - (1) which equals -1.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#75 2013-07-22 06:43:21

EbenezerSon
Member
Registered: 2013-07-04
Posts: 456

Re: Simplify the following:

Errr okay, I understand it now,  any number raising to the power zero is 1 therefore the 1 should take the sign of the x, Because is the x that makes the 1. I am right sir?


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