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**Somatic** Hello guys, I've stumbled across some problems in which I need to factor.

I'm pretty sure that its in quadratic form, but I'm not too certain on how to factor with numbers that have a power greater than 2.

This is problem number 1:

$\displaystyle 18x^4y^2 + 21x^5y - 6x^3y^2 $

How would I do this even do this? Do I need to factor in trinomials?

Problem number 2:

$\displaystyle 3x^3 - 12x^2 - 96x = 0 $

I'm not good with these types of problems, don't I usually end up with 2 answers with these type of problems? Can someone give me a description on what does the 0 have to do with this. How would I start this, I would appreciate at least a step on what to do next? Please and thank you in advance.

::EDIT::

I have resolved the second problem.

I'm not sure what to do with this problem, is this a matrix? I don't know how to begin on this problem:

$\displaystyle \{\begin{array}{cc}8x-7y=-9 \\-3x+4y=2 \end{array}$