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You are not logged in. #51 20110723 23:41:09
Re: Factoring PolynomialsIn mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #53 20110723 23:44:37
Re: Factoring PolynomialsTry this vid. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #55 20110723 23:45:26
Re: Factoring PolynomialsI am watching it now! In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #57 20110724 00:03:32
Re: Factoring Polynomials13. x^2 – 14x + 49 is it b???? One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3 #58 20110724 00:05:50
Re: Factoring PolynomialsHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #60 20110724 00:14:09
Re: Factoring PolynomialsHi zeef; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #64 20110724 00:28:17
Re: Factoring PolynomialsHi;
Well, the first term, x^2, is the square of x. The third term, 49, is the square of 7 or 7. Multiplying, I get 7x. Multiplying this by 2, I get 14x. But the middle term is 14x so we use the 7 *x * 2 = 14x In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #66 20110724 00:40:11
Re: Factoring PolynomialsHi zeef; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #68 20110724 01:05:11
Re: Factoring PolynomialsDo you want to learn it? Are you tired or well rested? In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #70 20110724 01:27:39
Re: Factoring Polynomials14. x^2 + 18x + 81 does that make it a ??? cuz 81 = 9*9 One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3 #71 20110724 01:37:53
Re: Factoring PolynomialsHi; Using these ideas you can check many problems on your own. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #73 20110724 01:55:18
Re: Factoring PolynomialsI have to go now, I will see you later. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #74 20110724 05:38:29
Re: Factoring Polynomialshi zeef Take the middle term, half it, square the result. (6/2 = 3. 3^2 = 9). If the last term is that number then you can easily factorise like this: see picture 2 (I loaded them the right way round but they've got reversed on the page.) It would only work when half the middle number, squared is the last number. So it would work for and also for If the squared term is not one x squared then it's more complicated. see picture 1. The clue that perfect squares might work is that it starts with 9 and ends with 25. Both are perfect squares. (9=3x3 25=5x5) But half the middle term squared isn't 25 this time. But if I make an adjustment it is ok. 9 is 3x3. So take 30, half it then divide by 3, then square it. So the extra step is divide by 3 So I think I can make a general rule. If the quadratic is (i) Check if both a and c are perfect squares. If not, find another method. (ii) If they are, find the square root of 'a', let's call it 'r'. (iii) Calculate b/2, then answer/r (call that 's'), then s squared. If you've ended up with c then factorisation is: Personally, I prefer to make a diagram like my pictures and slowly fit in all the numbers 'til I've got it. Bob Last edited by bob bundy (20110724 05:44:27) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #75 20110724 05:54:18
Re: Factoring Polynomialshi again, Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei 