This is quality teaching. Although I’m studying degree level mathematics I sometimes have to go back to basics. You can see that he has passion for the subject and not just going through the motions. When I was at school I had a physics teacher like this man who gave me a passion for the subject!
I might learn the entireity of surds in 10 minutes or so but might not get this good of an explanation on the topic. Thanks for clarifying my doubts, Eddie!
This video was so helpful to me as a year 9 student. I am in 5.3 level class and I did not understand simplifying surds when we learned it earlier this year. I now understand how to do that just in time for the yearly exam tomorrow. Wish me luck! :)
@@CULPRI7 I didn’t do well at the test but that’s ok because I somehow did well enough to stay in 5.3 in year 10. I’m hoping to do advanced maths in year 11. I hope you did well too! :)
The Kahn videos I have seen are terrible. I've only seen vids by one person at Kahn, but he is terrible at explanations and ignores all of the conventions in Maths.
@@f.demascio1857 Well, don't hate on them. They're doing what they can, and the majority of the videos are useful. You probably watch the wrong ones is all.
Probably because he's not wanting to teach that just yet. Otherwise you would never get to root(180) anyway, you'd just say root 20 is 2 root 5 and times that by 3.
Doesn’t question F need to be foil ? How come you only multiplied twice instead of four times ? Wouldn’t it be 4 x 7 x (-2sqrt7) x (-2sqrt7) ? Which is 28 x (-2sqrt7)^2 ?
Even I thought it like that but don't get confused.......... that happens only when it were (-2 + √7) But it is (-2 x √ 7 ) x (-2 x √7) = -2 x -2 x √7 x √7 If It were (-2 + √7) (-2 + √7) Then it would have been (-2x-2) + (-2 x √7) + (-2 x √7) + (√7 x √7) = 11 -4 √7 This algebraic expansion, which isn't required as only multiplication is occurring and as he stated, multiplication is commutative. If addition was happening btw -2 and √7, then only
Sometimes I just cannot see the board and he needs a camera person that can zoom in on the board occasionally. If he says all the numbers then, we know. If he just says what if we do this? We can’t see the “this” because the numbers are too small and far away. Maybe he needs a GoCam. So frustrating because he is such a great teacher. I cant see the numbers. Sigh.
Well, i hate to "be that guy" but, you are mistaken: Squaring any real number will always yield a positive real number. The negative square root of 2 cancels itself out during the squaring process.
It is only 2 in this context. The answer will be 2 and -2 in case you are solving for an unknown (say x) of a algebraic expression. This video doesn't touch algebra.
Eddie Woo my saviour. Whenever I don’t understand something just come here snd now I can teach my boys. Thanks Eddie.
bruh, just realised you teach in Australia. Save Melbourne High School, we need good maths teachers
Dr Amirul Islam he teaches Melbourne high?
I had a feeling it was Australia because the scenery looks very familiar.
It's funny seeing a doctor using the word "bruh"
yep here in NSW we are short good teachers
The best teacher ever💓
Only 6 comments? What this is ab-surd! But for real this guys the best teacher i've every seen and has 592K subs?
Micah Killmer now he has a million subs.
@@Hyblup ik. to see how the channels grown!
My favourite maths teacher. Thank you Eddie. Wish I'd had you as my teacher (40 years ago!) ;¬)
This is quality teaching. Although I’m studying degree level mathematics I sometimes have to go back to basics. You can see that he has passion for the subject and not just going through the motions. When I was at school I had a physics teacher like this man who gave me a passion for the subject!
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I might learn the entireity of surds in 10 minutes or so but might not get this good of an explanation on the topic. Thanks for clarifying my doubts, Eddie!
i find you the best teacher so far
He always smiles when he teaches, clearly he enjoys it. that's awesome
Wait until he gets a class of yr 7’s💀
This video was so helpful to me as a year 9 student. I am in 5.3 level class and I did not understand simplifying surds when we learned it earlier this year. I now understand how to do that just in time for the yearly exam tomorrow. Wish me luck! :)
OMG SAMEE!! hope u did well
@@CULPRI7 I didn’t do well at the test but that’s ok because I somehow did well enough to stay in 5.3 in year 10. I’m hoping to do advanced maths in year 11. I hope you did well too! :)
Awesome thanks so much!!
I just couldn't quite grasp the explanation on Khan
The Kahn videos I have seen are terrible. I've only seen vids by one person at Kahn, but he is terrible at explanations and ignores all of the conventions in Maths.
@@f.demascio1857 Well, don't hate on them. They're doing what they can, and the majority of the videos are useful. You probably watch the wrong ones is all.
Always thanks Eddie
great video you have helped me a lot can't thank you enough
You remind me of my old science teacher because of the way you teach His also a math teacher. This is very helpful thankyou!
this is the content is subscribed for!
9:10 Why don't you take the √180, turn it into √(5x36) and from there into 6√5 ?
It's a better answer, and other answers such as √4x45 can be simplified into 6√5
Probably because he's not wanting to teach that just yet. Otherwise you would never get to root(180) anyway, you'd just say root 20 is 2 root 5 and times that by 3.
Epic vid I love math now
I get it!!
Anyone know if he made a video explain why multiplying surds works?
Doesn’t question F need to be foil ? How come you only multiplied twice instead of four times ? Wouldn’t it be 4 x 7 x (-2sqrt7) x (-2sqrt7) ? Which is 28 x (-2sqrt7)^2 ?
Even I thought it like that but don't get confused.......... that happens only when it were (-2 + √7)
But it is (-2 x √ 7 ) x (-2 x √7) = -2 x -2 x √7 x √7
If It were (-2 + √7) (-2 + √7)
Then it would have been
(-2x-2) + (-2 x √7) + (-2 x √7) + (√7 x √7) = 11 -4 √7
This algebraic expansion, which isn't required as only multiplication is occurring and as he stated, multiplication is commutative. If addition was happening btw -2 and √7, then only
🧍🏾♂I have a math exam next week.
Sometimes I just cannot see the board and he needs a camera person that can zoom in on the board occasionally. If he says all the numbers then, we know. If he just says what if we do this? We can’t see the “this” because the numbers are too small and far away. Maybe he needs a GoCam. So frustrating because he is such a great teacher. I cant see the numbers. Sigh.
are you watching on a phone? I can see everything just fine
@@tobn634 yes
Somebody needs to pair him up with Scott Flansburg - together, they will be the ultimate math pair
2+3= 5
me..... Wow
Wait. Since when is 9x7=28? XD XD XD
it looks strange, but the '9' is just a badly written 4.
lol, i thought he was Logic
Tshepo Motlhagodi bruh what
@@skreepyy I thought he was Logic the rapper
Tshepo Motlhagodi logic is white Eddie woo is Asian lmao
Minute 3:57 - This is bit weird, multiplication works. No it's not weird, multiplication works with fractions, too: 1/2 X 1/3 = (1X1)/(2X3) = 1/6.
root 2 squared is NOT 2. It is 2 AND -2.
Great video though! This guy is great!
Well, i hate to "be that guy" but, you are mistaken: Squaring any real number will always yield a positive real number.
The negative square root of 2 cancels itself out during the squaring process.
Matt Harrison Thanks!
You are right, of course.
TH-cam Today You’re welcome! Don’t worry, we’re all here to learn. Greetings!
It is only 2 in this context. The answer will be 2 and -2 in case you are solving for an unknown (say x) of a algebraic expression. This video doesn't touch algebra.
its 6