Question about Texas Instruments TI-89 Calculator

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

I have a TI-84 but cannot factor problems like 6x(squared)+11x+4 = answer = (3x-4)(2x-1). I know how to factor, but would like to have a calculator that can do it. Is there a program I can buy for the TI-84 and program it, or will I need to purchase the TI-89? Does the TI-89 factor like this?

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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()

Posted on Jan 19, 2009

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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

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1 Answer

2x plus 5y equals 7 3x plus 6y equals 3


1) 2x + 5y = 7
2) 3x + 6y = 3

I'm going to use the method of elimination to solve for x and y.
Multiply 1) by 3 and 2) by 2 to allow the x's to be eliminated.

1) 6x + 15y = 21
2) 6x + 12y = 6

Now subtract line 2 from line 1.

0x + 3y = 15
---- ----
3 3 divide both sides by 3 to get y by itself.
y =5.
Substitute into 1) to calculate x.
2x + 5(5) = 7
2x + 25 = 7
2x + 25 -25 = 7 - 25
2x = -18
---- ----- divide both sides by 2 to get x by itself
2 2

x = -9

Check by plugging in answer into the other equation, in this case 2)

3 (-9) + 6(5) = 3
-27 + 30 = 3
3 = 3
We did it correctly and checked to prove that we did it right.

Good luck.

Paul

Mar 12, 2015 | Calculators

1 Answer

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.
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Jan 01, 2014 | Texas Instruments TI-89 Calculator

1 Answer

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This quadratic expression have two zeros, 7 and -1. Than you can write this as (x-7)(x+1)

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1 Answer

6x squared - 10x =0


Factor out 3X
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The expression is equal to zero if one of the factors on the left side equals zero.
1st solution: 3X=0, thus X=0
2nd solution 2X-5 = 0 if X=5/2

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3 Answers

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Unless I am failing to understand your problem, just combine like terms to get:
9x^2+2x+4 and then enter those coefficients into the quadratic solver.
That will get you the two answers -- both of them will be complex.
If you wanted to turn those two answers into factors (complex) of the original equation simply
change the signs on each and put an x in front.
Of course, the quadratic formula would also work.
CG

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Srry my friend the ti 83 is no magnificent Ti-89. meaning: you have to solve it yourself. There is a method for graphing though. Set the equation equal to zero and then plug the stuff on the other side of the equation into a graph by pressing y= and then typing it in. Then hit graph. Wait for the graph and then hit 2nd calc and select zeros. Bring your cursor using hte arrow keys close to where the line hits the x axis and press enter and then do the same except to the right of that point and then press enter twice and it will display the y which should be the answer
There are quadratic formulas for calculators programmed in tibasic for the calc but other than that there is no way to solve it

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