Is there a tool that lets you solve 4x4 augmented matrices?

I am trying to find the transition matrix

4x^3 -5x^2 +1,
12x^2 -10x
24x-10
24

to

x^3 -1
x^3 +x^2 +1
x^2 -x +1
x +2

I got
[ 9 -12 -24 0
-5 2 24 0
15 -14 -58 24
15 -14 -34 24 ]

I want to check to see if my answer is correct. Does such a tool exist to help you solve a 4x4 | 4x4 matrix online?

Question

Is there a tool that lets you solve 4x4 augmented matrices?

I am trying to find the transition matrix

4x^3 -5x^2 +1, 
12x^2 -10x
24x-10
24


to 

x^3 -1
x^3 +x^2 +1
x^2 -x +1
x +2

I got 
[ 9 -12 -24 0
-5 2 24 0
15 -14 -58 24
15 -14 -34 24 ]

I want to check to see if my answer is correct. Does such a tool exist to help you solve a 4x4 | 4x4 matrix online?

precal · Answer

http://www.mathportal.org/calculators/system-of-equations-solver/system-4x4.php not sure if this works but try it have you tried www.wolframaplha.com?

anonymous · Answer

That isn't what I want. I want to be able to solve a 4x4 augmented with another 4x4, this is augmented with a 4x1

I wonder if wolfram can do it. If it can, I sure don't know how! aha

precal · Answer

Sorry, maybe someone else can help

precal · Answer

http://educypedia.karadimov.info/education/calculatorsmatrix.htm how about this one?

vishal_kothari · Answer

http://www.wolframalpha.com/

precal · Answer

@vishal kothari 
how do you use the 4x4 feature?

anonymous · Answer

can you put up the system?

anonymous · Answer

Yep. I actually found out how do it. I just created a 4x8 matrix, and solved that online. I'm not sure if you can see the numbers, but here is what I did... http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi I know how to do everything, but with so many variables, mistakes are bound to happen. That's why I wanted to check! As it turns out, I had my transition matrix wrong, but this helped me spot a few of my errors I ended up getting [ -24 -16 -58 24 -20 16 58 -24 15 -4 -58 24 15 -14 -34 24 ] I was close...kinda!