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Need Some Basic Math Help
I'm not a very mathematically oriented person and I get the methodology confused all the time and end up screwing things up. I'm trying to do some college algebra homework and I wanted to make sure I was doing things the right way, this should be a breeze for 98% of you. It's not even hard for me, I just don't know whether or not I'm doing it right...
1. Factor of 15x^3/2 + 51x^1/2 -36x^-1/2 I got 5x-3 and x+4 by pulling out 3x^-1/5 as a LCM then foiling from there. Is this right/wrong? 2. Factor of xy + 3y -x -3 I grouped xy and x together giving me x(y+1) and then 3y and -3 together giving me 3(y-1) but is there another way to group them that I am missing? 3. Factor of 27x^-2 - 12x^-3 I simplified it down to 3x^-3(9x-4), but can it be reduced any further? Or is (9x-4) my only factor there? 4. This one is giving me the most trouble: (2x + 1)^8/3 + x(2x^3+1)^5/3 (3x^2) I don't really know where to start there. so basically, am I doing the first 3 right? and can someone get me started in the right direction on the last one? |
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