Question about Texas Instruments TI-89 Calculator

# Factoring when i try to factor something like x^2+5x+7 where the roots are not whole numbers, my ti 89 wont factor it. It just spits out the equation you just typed in. I know ive done it before and am wondering if i changed a setting or something

Posted by on

• Level 1:

An expert who has achieved level 1.

Mayor:

An expert whose answer got voted for 2 times.

• Contributor

X^2+5x+7 won't factor any more.. if you're trying to solve it, do:

solve(x^2+5x+7=0,x)

Posted on May 21, 2008

• Level 2:

An expert who has achieved level 2 by getting 100 points

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Sergeant:

An expert that has over 500 points.

• Texas Instru... Expert

Type: cFactor(x^2+5x+7,x) and you obtain solution for this problem.
See captured image

Posted on Dec 07, 2011

• Level 1:

An expert who has achieved level 1.

• Contributor

(t+9/t^2+9t+8)= (2/t^2+2t-48)

Posted on Jul 14, 2011

X^+.4x-.32

Posted on Nov 01, 2008

It won't factor it in the regular program because it is a complex number.

press F2 , go to A:Complex, hit the right key and select cfactor.

Posted on Oct 21, 2008

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
Good luck!

Posted on Jan 02, 2017

×

my-video-file.mp4

×

## Related Questions:

### Is it possible to calculate factors using a TI-30x IIS

I believe factors can be calculated on any basic calculator.

Starting with 1, increasing by 1 until you get to square root (number) + 1

Let's do an example.

28
square root (28)+1 = 6
Factors
1, 28/1=28
2, 28/2=14 14*2 - 28 = 0 (when you divide, you get no decimal)
3, 28/3=9.33333 - not a factor - doesn't go in evenly
4, 28/4 =7
5, 28/5=5.6 - not a factor - doesn't go in evenly
6, 28/6=4.66666 - not a factor
So now we can list our factors - 1, 28, 2, 14, 4, 7
Putting them in order, we get 1, 2, 4, 7, 14 and 28.

Good luck,

Paul

Jul 13, 2016 | Texas Instruments TI-30 XIIS Calculator

### My ti 89 won't factor

The polynomial cannot be factored in the set of Real numbers: The roots of the polynomial equation are complex.
You should use the command cFactor( found under F2:Algebra> A:Complex>2:cFactor(
However, you should set the Mode Complex>Rectangular, and the EXACT/APPROXIMATE mode to Exact, otherwise your roots will be in decimal representation.

Jan 01, 2014 | Texas Instruments TI-89 Calculator

### How do i solve the equations (r-3)(r+6)=0 using my ti-30xa

If you expand that formula into r^2 +3r - 18 = 0, then you can use the quadratic formula.

The two solutions for r are:

r = (-3 + sqrt((-3)^2 -4(1)(-18))) / 2(1) = 3

and

r = (-3 - sqrt((-3)^2 -4(1)(-18))) / 2(1) = -6

Try typing those in using the calculator to get the same results.

May 25, 2011 | Texas Instruments TI-30XA Calculator

### When i try expand solve or factor i get a dimension error

Using solve and factor requires correct mode and proper equation set up. Ref to manual might help.

Jul 20, 2009 | Texas Instruments TI-89 Calculator

### Can you Factor on a TI-84? IF not, does the TI-89?

Well, to answer part of your question, yes... the TI-89 does factor like this. it is inputted like this:

factor(6*x^2+11*x+4,x)

Check the catalog in the TI-84 (which is 2nd-zero) and look under F for factor()

Jan 12, 2009 | Texas Instruments TI-89 Calculator

### Factoring

you are an idiot you are entering in the equation which you wish to be factored in the wrong order quit taking stupid pills and look it up in the manual do not annoy people with such an ignorant problem ask a friend. And if you don't have one then throw your calculator against the wall as hard as you can and learn to factor the old fashion way you ******

Jan 07, 2009 | Texas Instruments TI-89 Calculator

### Factoring and expanding

try going to var link and deleting any variables like x and whatever you're trying to factor as they may be stored as lists and thus come out factored like that

Apr 25, 2008 | Texas Instruments TI-89 Calculator

### TI-89 Factoring Not Working

I think what you want to do is not to factor but to expand, which is the option right under factor [F2, 3]. expand((x-5)^2) = x^2-10x+25

Jul 13, 2007 | Texas Instruments TI-89 Calculator

## Open Questions:

#### Related Topics:

504 people viewed this question

Level 3 Expert

Level 2 Expert