Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**4littlepiggiesmom****Member**- Registered: 2006-01-09
- Posts: 42

I think I;ve got these right but mom's gone for the week and dad won't even look at math over 4th grade??? So please if any one could tell me if I have these right and just tell me which are wrong so I can try firguring the ones I have wrong again! APB The instructions on 2-58 just say Simplifiy the Expression...

1.(x+3)/(x^3-x^2-6x) Divided by ((x^2-9)/ x^2+x-12)= (x+4)/ (x)(x+2)(x-3)

2. (x^3+x^2)/(x^2-16) * (x+4)/(3x^4+x^3-2x^2) = 1/(x-4)

3.(12x-4)/(x-1) + (4x)/(x-1) = 48x

4. (5)/(2x^2) + (4)/(3x) = (8x+15)/(6x^2)

5. (4)/(x+3) + (3x)/(x-2) = (3x^2+4x+1)/(x^2 +x-6) Should I simplifiy that down to (3x+1)(x+1)/(x+3)(x-2) or not???

6. (5x+1)/(x-3) - (2x)/(x-1) = (7x^2-4x-3)/(x^2-4x+3) I haven't broken it down as I can't tell if I;m suppose to?

I just gave them number 1-6 out of 56 I have done! The rest look right but these 6 I'm not sure on!

Again please just tell me if I'm right as I really want to figure them out by myself! Thanks... APB

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

1.

2.

3.

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

4.

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**renjer****Member**- Registered: 2006-04-29
- Posts: 50

You got the numerator in your answer wrong for 5 and 6, that's according to Scientific Workplace.

Btw, how do you enter the equations directly in here? I tried using the Latex syntax to do it but it wouldn't display properly.

*Last edited by renjer (2006-05-05 16:26:07)*

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 20,399

renjer,

To view how LaTeX is used, you can try using 'quote' of a message in which it has been used.

`For example,[math] \frac{a^{2}}{b^{2}} [/math]`

would produce

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**renjer****Member**- Registered: 2006-04-29
- Posts: 50

I didn't know you had to put them in [math] tags.

*Last edited by renjer (2006-05-05 19:59:25)*

Offline