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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

EbenezerSon
2013-07-24 01:53:05

I will use the almighty formula for the factorization, I presume I will get some decimal figures as answers.

bob bundy
2013-07-23 07:50:40

So now the question has become:



It still will not lead to those answers:

x = -1



x = -2




Closest equation with those answers that I can find:



Bob

bobbym
2013-07-23 06:55:23

If you are marked wrong about it then you will have the consolation of knowing that I would have been marked wrong too.

EbenezerSon
2013-07-23 06:53:08

Yeb I must believe you, c'os the author stated explicitly that, a student should forgive any mistake that would be found in the book. Is just at the beginning of  the book .
:-) But still you're darling!

bobbym
2013-07-23 05:53:41

I could not solve that by hand. It takes a computer to solve it. The answer involves complex numbers further showing that the problem is mistyped.

EbenezerSon
2013-07-23 05:45:58

Then please how exactly would the final answer be?

bobbym
2013-07-23 05:35:04

It still looks like a mistake in the book. -1 and -2 are not roots of that equation.

EbenezerSon
2013-07-23 05:09:34

bobbym wrote:

It is obviously some sort of typo.

The book is before me now and has positive 1 just at the end.

bobbym
2013-07-23 05:04:42

It is obviously some sort of typo.

EbenezerSon
2013-07-23 05:01:28

bobbym wrote:

Hi;



This is exactly what is in the book then?

Yes Sir!. Positive 1 is at the end

EbenezerSon
2013-07-23 05:00:19

bob bundy wrote:

I just wanted to be clear that the problem is:



If so then x = -1 and -2 are not solutions:



This is not zero.

Bob

Yes that's how it is arranged, in the book.

bobbym
2013-07-23 04:58:21

Hi;



This is exactly what is in the book then?

EbenezerSon
2013-07-23 04:51:24

bobbym wrote:

Hasn't he raised a good point with

bob bundy wrote:

I think it is unlikely that a book would use the symbol ^

I would agree, but you say it is there! But then his post #5 is correct and that is not a solution.

The book did not use the symbol ^, I rather used it , because the 2x +3 is at the top of the 3 in the book.

bobbym
2013-07-23 04:44:58

Hasn't he raised a good point with

bob bundy wrote:

I think it is unlikely that a book would use the symbol ^

I would agree, but you say it is there! But then his post #5 is correct and that is not a solution.

EbenezerSon
2013-07-23 04:37:09

bobbym wrote:

What does 3^2x+3 mean?

It means the 3 has raised to the power 2x+3.

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