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Alg 1 7-8 Factoring Polynomials Completely 1 (3/7/17)

Added Mar 06, 2017 •

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hello algebra I'm so sorry I'm gone again but today we are doing more of what we started yesterday and then don't forget tomorrow and Thursday we'll have plenty of time to review so what plenty of time to go over this and get all your questions answered a polynomial completely same one as yesterday I just look throwing up there in case anybody didn't get it  and we did your yesterday on your note and I know. Too that we did example one already and I now I'm here at 5 we got through most of it but not all of it regardless I just felt like it probably wouldn't hurt to see how to do it one more time and then that way you guys can practice with the additional practice after each polynomial by grouping remember this only works if there's four terms and we group the first two terms and one group II two terms we ask ourselves what do the first two terms have in common  say hot in x squared in common and an x squared in common Square comes outside that's the stuff that you guys keep forgetting to do try and remember that one and we're left with One X Plus  and then one of these two II to have in common plus to remember to write that sign that's important  and we're left with  X-Plus 3  and then now we ask ourselves  what does this term and this term have in common it has an x + 3 in common so the X plus 3 comes outside and what do we have left  x squared + 2  final answer remember if the part in the front disease is not correct you probably did something wrong and you want to check your answer again  okay looking at our next example Part B this one we had to reorder just because we had to put RX together and I put her wise together and I generally treat you gently want your ex's and you generally want your wife's to get so when I reorder this I'm going to have x squared still in front plus X  Plus plus why so now the way I've ordered it I have all my exes together and I have all my wife's together  so now I turn group up my first two  group up my second to you what am I first what in common  they have an X in common so the ex comes outside  and then X plus remember even though these cancel out they don't go away completely they cancelled to one pay anything divided by itself is 1 0  and then what am I II to have in common they have a wine common what kind of lied a + y and then I have X plus one again cuz again they cancel out that they cancel out till 1  Alright and then what do these two pieces have in common they have an X Plus someone in comments that comes outside and what's left x + y this right here is your final answer and that algebra is how you factor by grouping  Posite hear your turn to do the additional practice the next thing you know they'll see is just the answers to that see if you guys didn't write and if not write a question in the question, about questions that you have on it that way you guys don't forget tomorrow to ask me Okay so here are the answers you get a plus three times a squared plus 1 and then for number 2 you should get y + 2 x y + x annoying thing I really want to point out here is for this one right here since they don't have anything in common I just took out a 1 can I suck if anytime they are Prime and it's already simplified you just take out a one and then that's how I ended up with the plus one on the other problems on the other problem I reordered it and this time I reorder it's to let the wise came first because there were more wise than exes and then everything else from there should be self-explanatory so Posite talk it over with partner if you need you know otherwise I'm going to keep going actually no I'm going to stop the video yes to watch the next one

Uploaded by Lauren Stouffer.

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Alg 1 7-8 Factoring Polynomials Completely 1 (3/7/17)

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