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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

For problems 1-10, solve the given rational equation show work

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

Hi;

Welcome to the forum;

For the first one:

Cross multiply

Divide by 9.

Want to try the second one on your own?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

I have the answers I just don't know if they are right so can you do the second question like the first question

so I can know how to do the rest

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Cross multiply

Subtract 15 from both sides

Divide both sides by 3

*Last edited by Agnishom (2013-09-04 03:26:56)*

'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'

'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

Use the quadratic formula to solve the equation. Find the exact solutions. Show your work.

1. x2 4x + 3 = 0

2. 3x2 + 2x 1 = 0

3. 8x2 2x 3 = 0

4. 2x2 5x 3 = 0

5. 6x2 5x 1 = 0

6. x2 + 8x + 12 = 0

7. x2+ 10x = -25

8. x(x 5) = -4

Can you do it so I can make sure that I am right

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Not really. That would be a great wastage of time.

where the polynomial is in the form ax^2 + bx + c

For the first one, a = 1, b= -4 and c = 3

Try to put the values of a, b and c in the formula

*Last edited by Agnishom (2013-09-04 06:05:41)*

'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'

'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

Hi Derick Mixon;

What answers did you get?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

3,1

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,050

hi Derick Mixon

Those answers are correct for Q1.

Now try another.

You might find this page helpful:

http://www.mathsisfun.com/algebra/facto … atics.html

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

2.33333, -3

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

Hi;

Those are the roots of

that does not appear to be in your list. Can I see how you got that?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

number 2

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

Hi;

Those are not the roots for number 2. How did you get your answer?

What are they teaching you, factoring or the quadratic formula?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

I have no clue can you help me out

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

I have no clue can you help me out

Of course I can, they used to call me "Mr Equation," because there was no equation I could not solve.

What are they teaching you, factoring or quadratic formula?

What have you been taught so far?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

quadratic formula

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

.333333, 1 is that answer

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

That is real close except you have a wrong sign!

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

,-1

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

That is correct! You must be careful with your arithmetic.

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

Aye man Im kinda in a hurry to get finshed with these course because its causing me to be ineligible for football and I am about to loose a scholarship from Wofford and Clemson you think you me through the last little bit of lesson I have?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

I will do you that favor but I am opposed to it. Athletics are great but they are fleeting. A guy's body can only last so long. An education lasts a lifetime.

The answers will be posted for 3 to whatever.

I hope my statements above will not be ignored.

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

Can you give me the answers and work for the lesson to see if I have the correct answers?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 96,563

The answers have been posted in post #22.

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

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**Derick Mixon****Member**- Registered: 2013-09-03
- Posts: 65

what about the work? and does that start from 3 -8?

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