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#76 2013-07-23 04:44:43

EbenezerSon
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Re: Simplify the following:

It seems that brought my mistake!

#77 2013-07-23 04:47:51

EbenezerSon
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Re: Simplify the following:

So, by combining them. x^2 - x + x - 1 = x^2-1. is this right Sir?

#78 2013-07-23 04:48:51

bobbym

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Re: Simplify the following:

The order of operations goes

"Please Excuse My Dear Aunt Sally" or PEMDAS

It says parentheses first then exponentiation so

-x^0 says do the exponentiation ( raising to a power) first and then the minus sign. so it is -1.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#79 2013-07-23 04:55:13

EbenezerSon
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Re: Simplify the following:

bobbym wrote:

The order of operations goes

"Please Excuse My Dear Aunt Sally" or PEMDAS

It says parentheses first then exponentiation so

-x^0 says do the exponentiation ( raising to a power) first and then the minus sign. so it is -1.

Please I am not grasping what you mean.

#80 2013-07-23 05:00:12

bobbym

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Re: Simplify the following:

You raise a number to a power before you do anything other than a parentheses. This is called the order of operations. The ^0 goes first then the - sign.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#81 2013-07-23 05:07:15

EbenezerSon
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Re: Simplify the following:

Errr okay. So something like. (x^2 - x + x - x^0)

#82 2013-07-23 05:10:11

bobbym

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Re: Simplify the following:

Yes, that is correct but you simplify it to

x^2 -1

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#83 2013-07-23 05:21:39

EbenezerSon
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Re: Simplify the following:

So know, please let factorise the denominator.

#84 2013-07-23 05:37:09

bobbym

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Re: Simplify the following:

Hi;

You do the denominator the same way.

Try using FOIL.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#85 2013-07-23 05:43:55

EbenezerSon
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Re: Simplify the following:

With the denominator I had: x^3 - 2x^2 + x.

#86 2013-07-23 05:49:30

bobbym

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Re: Simplify the following:

That is correct. When you combine the numerator and the denominator you get:

but you are not done because you can simplify further.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#87 2013-07-23 06:22:44

EbenezerSon
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Re: Simplify the following:

I must factorise the denominator, and here I go:

x^3 - 2x + x = 0

= x^3 - x^2 - x^2 + x = 0
= x^2(x - 1) - x(x - 1) = 0

Therefore:

(x^2 - x)(x- 1)

Numerator looks like difference of two square. There I go:

(x - 1)(x+ 1)/(x^2 - x)(x- 1) = x + 1/x^2 - x) = x + 1/ x(x - 1) . I hope I am correct.

#88 2013-07-23 06:28:46

bobbym

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Re: Simplify the following:

That is correct! Very good.

I know they are not stressing anymore but they are wrong. Please bracket it like this:

(x + 1)/ (x(x - 1))

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#89 2013-07-23 06:42:57

EbenezerSon
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Re: Simplify the following:

Do you mean you can simplify further?.

#90 2013-07-23 06:46:50

EbenezerSon
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Re: Simplify the following:

Thank you very much indeed Sir!, in fact you're darling!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

#91 2013-07-23 06:53:37

bobbym

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Re: Simplify the following:

You are welcome and please call me bobbym. Good night, I need rest.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#92 2013-07-23 06:54:56

EbenezerSon
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Re: Simplify the following:

Thanks bobbym, I get you.

#93 2013-07-23 22:21:40

EbenezerSon
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Re: Simplify the following:

.

b)

has square root on it.

Son.

Last edited by EbenezerSon (2013-07-23 22:45:00)

#94 2013-07-23 22:57:25

bobbym

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Re: Simplify the following:

Hi;

Is that what you have?

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#95 2013-07-23 23:33:48

EbenezerSon
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Re: Simplify the following:

No, the top terms are all on one platform. It was accident that I brought a space between the twenty seven and the rest.
Besides, it is 6.3^3n+3. I missed the sign for negative. I am sorry.

#96 2013-07-23 23:36:21

bobbym

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Re: Simplify the following:

Is this closer?

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#97 2013-07-23 23:46:01

EbenezerSon
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Re: Simplify the following:

between the six and the three is multiplication sign. that is only problem.

#98 2013-07-23 23:47:31

bobbym

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Re: Simplify the following:

So this is the problem:

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#99 2013-07-23 23:55:38

EbenezerSon
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Re: Simplify the following:

you have taken the negative sign after the six.

#100 2013-07-23 23:57:23

bobbym

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Re: Simplify the following:

I am not following you. Can you copy the problem as it is written?

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.