Simplifying Surds (1 of 2: Squares vs. square roots)

[avi]

A good teacher teaches you how to solve the X,
A great teacher also teaches you the y (why)

[BabylonCentral]

Could your students really know how lucky they are? Love the lessons.

[gannugood]

Parent of a Yr 9 Student. Cloning tech is of no use, if we cannot clone people like you. What an inspiration you are!!! Salute.

[arsam]

5 years later and it still helps so much.

[xXbussydestroyerXx]

"Have your pens down" *simultaneous clunk of pens being put down*

[raisemygrade]

You present and teach so well. Love lesson on whiteboards like this.

[jameshidding]

at 4:05 some 12 year old kids are having a roasting battle

[blueberryy]

You could write the rule as √(±a)² = +a.

[alexsweatman]

"what the dickens is going on here"

he makes math doable for me and helped me understand surds when my teachers didnt, very effective teaching!

[eveshute]

Love this guy, he reminds me of my teacher I had for years, she's just like him explaining everything and what it all means

[honeytaro]

legend. i learnt a term of maths in a hour.

[someone]

I cannot stop being grateful for this teacher's existence

[monkeychicken]

not to be annoying or anything but in my school they taught us that the square root of a number can be positive or negative and the same for any even root so it can be true, plus example 2 could be wrong too

[HandsomeDevil]

I wish I had this lesson in high school. I only learned in college, precalc specifically, that the square root of x^2 is actually the absolute value of x. And that also caused confusion over why sometimes you solve for x using a square root and it becomes equal to +- something. All of that would have been cleared up if I had this lesson. (at least, I assume that's what the next part will be since I haven't watched it yet).

[micahkillmer]

Only 15 replies this guys the best teacher on youtube!

[timmytim]

Such a good teacher. Teaches why and how. And he's so cute!!

[Paddy.Collins]

I wish I could have this guy as a maths teacher

[magnesiumfilmsltc]

Shoutout to the Domain Of Science's mathematic's poster

[videovideoyeah]

Thanks for this video you’ve really helped me

[garfieldcatgc]

I like how you put the brackets to avoid ambiguity but for eg: SqRt (5^2) = plus, minus 5 because essentially like your example it is SqRt (25). However if you take (SqRt 5)^2 that is SqRt5 *SqRt5 = +5? The negative 5 does it exist?