oc0110

what u have to do is make a common denominator so multiply the bottom denominators and make a new denominator. Then multiply the missing denominator for each fraction and subtract or add. ex: (x)/(x-2) - (5x^2 + 1)/(3) --> make a common denominator (x-2)*(3) = 3(x-2) = 3x - 6 <-- this is ur new denominator now from the fraction:(x)/(x-2) it's missing the denominator 3 from the fraction so multiply both the numerator and the denominator --> (3x)/(3x-6) <-- the 3x -6 is the common denominator do the same to the other side since x-2 is missing multiply top and bottom with x-2 --> and u'll get [(5x^2 + 1)(x-2)] / 3(x-2) --> = (5x^3 + x -10x^2 -2)/(3x-6) now combine them: (3x)/(3x-6) - (5x^3 + x -10x^2 -2)/(3x-6) = (-5x^3 +10x^2 +2x +2)/(3x-6) That should explain it pretty well. ugh miss this kind of math after doing IB HL math...

what steffen said for the first question and the process for the second question: (r+2)/(r+4) - 3/(r+1) = [(r+2)(r+1) - 3(r+4)]/[(r+4)(r+1) = (r^2 + 2r + r + 2 - 3r -12)/(r^2 + 4r + r + 4) = (r^2 - 10)/(r^2 + 5r + 4)

Howard: Mom you know you could see me if you turned on the computer, right? Howard’s mom: I cant turn that thing on! I’ll catch a computer virus from that thing! Howard: Mom, you can’t get a virus from computers. Howard’s Mom: Oh! So now you’re an astronaut and a doctor?!?

I would put in a ssd in there for the boot drive

There are some really nice wearables out there, but I'm not sure if they are really worth the price given. I would like to see what others think.

4 hours of battery life should be enough. And thanks for the awesome replies

Currently I am going graduate high school, so I have been thinking of buying a laptop during summer. I am a casual gamer who usually play games like League of Legends but at times want to play Battlefield 4 or Titanfall. It is fine if Battlefield 4 or Titanfall can't be played on the laptop (it's an option). I want to get a decent performance laptop with a dedicated graphics card and the battery life matters as I will be carrying it around in my university. I also want a laptop that looks pretty good and is portable, not like Alienware laptops (they're awesome gaming laptops, but not suitable for my needs) . Also, the weight of the laptop does not matter. I didn't write down the HDD and SSD, because I will swap out the HDD into a Samsung 840 Evo SSD (either 250GB or 500GB). Some choices I have looked at are: Samsung ativ book 8 NT870Z5G-X58 (samsung series 7 chronos) or NT870Z5G-X78 with Intel® Core™ i7 Processor 4700HQ (2.40 GHz up to 3.40GHz, 6 MB L3 Cache) Intel HM86 Intel® Core™ i5 Processor 4200H (2.80 GHz up to 3.40 GHz, 3 MB L3 Cache) Intel HM86 8GB DDR3L System Memory at 1600MHz (on BD 8GB) 1 SODIMM NVIDIA® GeForce® GT 750M Graphics with 2GB gDDR3 Graphic Memory (Optimus™) Size: 376 x 249.9 x 20.9mm (15 in laptop) Maximum Battery Life: 11.5 hours Samsung ativ book 6 NT630Z5J-X54S (was released in Samsung's Korean website) Intel® Core™ i5 Processor 4200U (1.60 GHz, up to 2.60 GHz, 3 MB L3 Cache) 8GB DDR3L System Memory at 1600MHz (4GB x 2) 2 SODIMM NVIDIA® GeForce® 820M Graphics with 2GB gDDR3 Graphic Memory (Optimus™) Size: 375.9 x 247.9 x 22.8mm (15 in laptop) Battery life isn't specified but Samsung's battery life usually lasts long enough and the processor allows battery to last longer. Lenovo Y50 (not released yet) i7-4702HQ processor NVIDIA® GTX-860M 16GB DDR3 Ram I don't need the 4K resolution option It's a slim 15 in laptop Battery Life: 4 hours Feel free to give any other suggestions. The price range I am looking at is from $1000 ~ 1200 (1300 ish) with the size of like a 15 in display. Thanks