I hate factors > <

1. http://i23.tinypic.com/15wflw1.jpg

Is that correct?

2. http://i24.tinypic.com/mmx2di.jpg

Is that correct? Do I have to take it a step further somehow?

3. http://i24.tinypic.com/106yko7.jpg

I have no clue what to do here.

4. http://i23.tinypic.com/2ymi1qa.jpg

Aside from C and D making no sense. The correct answer would be either A or B but it's B because it's the only one factored right? Isn't A like some GCF factor thing.

5. http://i20.tinypic.com/29y17jl.jpg

Is this correct?

Work:

(r^2-4tr) + (3wr -12tw)

gcf:r gcf:3w

r(r-4t) + 3w(r-4t)

woot

=(r-4t)(r+3w)

6. http://i20.tinypic.com/ztca6g.jpg

4+3xy-6y-2x

(4-2x) + (3xy-6y)

2(2-x) + 3y(x-2)

so now (2-x) and (x-2) are inverse or whatnot so multiplying one side by -1 would make the one on the right -3y(2-x) or would I leave the 3y alone?

Edit: got (2-x)(2-3y)