Thanks

Zoomer ADHD detected.No communication needed,fast information only.

@@ZeroSleap Well yeah that's sort of the reason people are here. They want to learn math, not hear this guy's life story about how he was a teacher and that stuff. It's great that he's a teacher and has so much experience, but this isn't the best place to share that.

@@ZeroSleap -👴

And even then i land on the KZfaq ads. I already watched some before he started his interminable smug rambling and preening and begging for money.

Math is not regional but UNIVERSAL. Of course the "Americlans" always beg to differ. By the way these videos are unwatchable. I wonder why?! 🤔👎

@@panagdimi "the Americlans always beg to differ." No begging needed. Americans are different.

Thank you for bringing this up, I just got here and I consider the given answer to be wrong due to this. If the constraints are stated (x != 1/2, -1/2) then it's ok.

Math ruined my life! I wanted to be an airline pilot. For that, back then in the 70’s we had pretty much first have a BS in engineering. I could barely follow algebra 1, did pretty well in geometry. Advanced algebra was a disaster. I went into physiology. Had to take calculus I & 2 for pre-med. I hired a tutor . The first quit, saying I was “unable to understand math” . The second was a post grad working on a PhD in physics. He came to the same conclusion, but he gave me hope. “ for calculus 1 you will have to use one of these 10 formulas and he listed them. Now we are going to work on the wording of the problems, so you will know which formula to use! So, he would write 20 problems and I had to find which formula I should use, and what number went where in the integral calculation. It was like memorizing a script for a play, or poetry, and then quickly recognize which formula I had to use and I wold get an A! I got A in both calculus 1 & 2 without understanding why or how that formula was the right one. I felt cheated by nature! I breezed through the rest of the courses, advanced biology, Chemistry, biochemistry microbiology, anatomy and others. I passed the MCAT and breezed through medical school and graduated Suma Cum Laude, with the second highest GPA á for my medical school class. Now, at the age of 70, having taught in Ivy league medical school, authored over 50 articles in peer reviewed journals as well of being Editor and associate editor of several well known textbooks besides some authors who were Nobel prize laureates, there is only one thing I was never been able to master: ALGEBRA AND CALCULUS! I remember driving my algebra teachers to near madness or despair. They would write a complicated advanced algebra equation on the board, do the obvious simplifications which I understood. Then he would say, “Now we are stuck, let’s think what we can do: lets multiply by 5”. That drew a complete blank in my reasoning! I would ask “why 5? Why not Planks constant? Why not Newton’s gravitational constant of the universe? “ He would look at me as if I was from another planet. “Watch and you will see”. I did watch and to me there was no logic as to why he had picked “5” to multiply. I waited out of respect till he finished the equation, and he would ask me: “now go you see why I di what I did?” I looked at him and would say, I am more confused now than when you multiplied it by 5” Where did you get 5 from? Are you psychic? Did this number just came to you as a Divine revelation?” I would stay after class & Mr McCartney tried to show me how and why he came with these “spontaneous solutions” I kind of understood how he would chose a random number, but it still did not make sense… That’s when I got a tutor. I squeaked by in his class, but in Calculus, it made absolutely no sense to me. Tutors saved my life and I owe them my achievements in Medicine, being an internationally known expert, and having been invited to conferences all over the world. I am now seriously thinking going back all the way to simple fractions and learn calculus before I die! I speak 4 languages, am a quasi-genius in electronics, I love to read quantum physics until it comes to math. I skip that part! So I still have a dream to be a pilot. I am building a full size cockpit of a Boeing 767, on a Thompson platform using electric actuators. Using geometry I can calculate how much 2 actuator have to go down when I am making a descending turn to the left or right.. That makes sense and the formulas come to me naturally. Including the turning rate or an endless screw to match the opposing actuator pushing upward at a different angle. Lot of trial and errors even using math, but aí manage to get it done. Any advice for an old doctor who sucked at math all his life?

thats a great story. I would guess your continued patience will keep you afloat. @@tonytor5346

Thank you!! He talks too much!!!!!

Hint, skip to 9:51, then mute sound and play in double speed...

But be aware of the many errors, see my comment.

Great speech to the kids. Thanks for understanding

And with errors, again and again

If you don't know how to factor the difference of two squares, then it is impossible.

I am no expert in math, but I believe it is with the assumption that x is not 1/2 nor -1/2.

@@MFM230 I see that assumption nowhere explicitly...

@@tmjcbs 4x squared -1 = (2x+1) (2x-1) as a denominator. Even though the (2x-1) cancel out each other in the numerator and denominator, the solution cannot equal zero because it would result in a zero denominator. Hence, you have to solve both (2x+1) and (2x-1) for zero so as to avoid a zero denominator. It is permissible to cancel the terms as long as the solution is not zero. If there is a math teacher out there, I would like her/him to check my reasoning.

@@MFM230 I happen to be a math teacher, your reasoning is right. I can only repeat my earlier comment: in the video that assumption is made nowhere...

@@tmjcbs Thanks for checking my math.

The fact that this comment is from someone with your username is nice hehe

The task is to *simplify* not to solve for X. Since it is not an equation, there cannot be a solution for x.

Slope = -x/y when written in standard form

(-1) * the coefficient in front of x divided by coefficient in front of y. So if its ax+by=c, m= -a/b. Examples 3x+4y=6, m = -3/4. -2x+4y = 3, m = +2/4 = 1/2

Thank you!!!

That's your point. The complaints are not petty. They come from intelligent maths students. Why is your backside burning

The challenge is to simplify. Not input values for x to see what it produces

@@IRanOutOfPhrases Just that? Well, if you apply the third binomial formula on 4x² - 1, you get (2x + 1) ⋅ (2x - 1). And (8x - 4) / (2x - 1) cancels out to 4. Therefore, you get 4 / (2x + 1) as a simplified term. But you should mention in the task what you want from me.

@@Nikioko He does that at the 0:17 mark

exactly. it wasn't asked to be solved it was just asked to be simplified.

But be aware of the many many errors you will get for these reasonable prices. In many, many of his videos he makes errors and teach the wrong things. See also my comment on this video. Even the demo on his commercial website contains errors!

True.

FYI - it's "lose interest". "Loose" rhymes with "goose", "moose", and "noose". "Lose" rhymes with "shoes."

@@laurendoe168 all of them rhyme

I'm totally in disagreement. His explanation is great 👍

@@pittyconor2489 yes, that's my point. "Loose" does not rhyme with "shoes". "Loose" means "not tight". "Lose" means "unable to locate"

yes... but fractions within a fraction are typically avoided

Then you already know what you need to know, which is great! This video took a long approach to explain it to those who are new to the concept or who struggle with it, which you obviously don't

@@sayrain908 I stopped watching the beginning because it was confusing me... and I KNOW the topic!

@@sayrain908 I have to acknowledge and applaud the class with which you responded to that comment. Politeness is still huge in 2024. 👍

I'd recommend taking remedial classes to catch up or finding a tutor who can catch you up.

I think after you say, "Greetings," you meant to say, "The answer is 4/2x=1" not 4/3x=1.

@@bowlinghuddles17 Greetings. Correct. Thanks for your attentiveness. Blessings.

Thank You 👍

We say "math" in North America and they say "maths" in the U.K. but they both refer to "mathematics".

Ok, Sounds like you’re the one to ask my question then. Haha! I don’t NEED to know or anything, but now I’m bothered because I haven’t figured it out… 😄 and I just need to figure it out, ok?! 😅 Aaaaanyways. So, say I have a mixed packet of Sweet Bell pepper seeds that contains equal parts of 5 different varieties. What is the minimum number of seeds that I would need to plant in order to ‘guarantee’ that I’ve planted one of each variety. 80% of them + 1, right? Well, what if I had a bucket of seeds?! That’s just a ridiculous amount of Bell peppers. So, instead, I decided that I was willing to utilize two rows in my seed starting tray. That’s 12 cells. There are 39 seeds in the packet. An equal 20%of each variety (orange, white, purple, yellow, and red) included in the packet, according to Burpee. What are the “odds”, “%chance”, or “probability” (i’ve been thinking about this too long and I’m not even sure which I’m asking for anymore. lol) that I will have planted at least one of each variety? Please and thank you

Dats what he supposed to do

same. stupid example