Substitution is the Key

Рет қаралды 21,408

Mr H Tutoring

24 күн бұрын

Пікірлер: 40

@productiveentertainment8672 22 күн бұрын

the way you write on the board is satisfying

@jorghimvenerablebosstein7568 22 күн бұрын

I agree! That 💩 is 🔥!

@ErebosTerror 22 күн бұрын

I'm very happy that there are people on Earth who understand and enjoy this type of thing. We NEED YOU.

@luisclementeortegasegovia8603 21 күн бұрын

Good video, nice to know there are teachers like you!

@ItsVideos 22 күн бұрын

"Substitution is the Key" was the clue I needed. x = 1 x = 8

@seventhunder777 22 күн бұрын

Love that method a lot.

@Ayesha-kr0845 7 күн бұрын

When I saw your video it's made me to subscribe it❤

@aleksandarjankovic1531 5 күн бұрын

It was not immediately obvious to me that this is a hidden quadratic.

@lawrencelawsen6824 20 күн бұрын

I absolutely love this stuff!

@LiquidRR 22 күн бұрын

Awesome!

@user-yc4wh8lh8b 22 күн бұрын

Very good

@download2405 Күн бұрын

Please write the title of the math problem you are trying to solve.

@ambroselee5465 17 күн бұрын

Your the best math teacher ever

@juanumana6894 20 күн бұрын

Bendiciones por siempre

@erdogankaplan8005 22 күн бұрын

👏

@juanumana6894 20 күн бұрын

Excelente

@godfredjnr.9849 19 күн бұрын

How did it turn into a quadratic equation. I mean, why is the 1st 'a' squared when a=x?

@mathslove51 18 күн бұрын

a is not equal to x. He let a=x^1/3. so then x^2/3 becomes a^2 and the equation is quadratic. Hope that helps.

@godfredjnr.9849 18 күн бұрын

@mathslove51 ok yh I realised that when I watched it for the 3rd time

@harrymatabal8448 22 күн бұрын

Short and simple ❤

@zevelgamer. 21 күн бұрын

For some reason my inner self said Tritone sub

@noname-ed2un 13 күн бұрын

I paused the video and tried another method. I noticed x^1/3 so i move 2. To the other side and factored. Got x^1/3(x^2-3) = -2 X^1/3 = -2 X= -8 X^2 -3 = 2 x^2 = 1 X= 1 I know my answer is wrong but can anyone tell me a different way to solve thi aside from themethod shown in this video. Also what might have gone wrong in my calculations.

@davidaktun 22 күн бұрын

Did it,a bit different,same solutions

@gonkakazoid 21 күн бұрын

How 3a could be substituted for 2 if a is x 1/3 wouldn't that mean (a)3 = (x 1/3)3??

@KerryBaynes-qi1sh 21 күн бұрын

I would show 8th grade students 2^3.585.

@ashathakur8495 3 күн бұрын

@abhirajanita9640 22 күн бұрын

But when to substitute and when not to

@cybersoul3371 22 күн бұрын

Substitute when you're not sure how to proceed without substitution and you can see a substitution that makes the problem easier (noticing that both x terms had 1/3 in their exponents' denominators is the key here)

@abhirajanita9640 22 күн бұрын

@@cybersoul3371 thanks

@420sakura1 22 күн бұрын

It only comes with practice. There is no hard and far rule for that.

@MiniSamSulek 22 күн бұрын

Your in great shape man!

@giannaleoci2328 20 күн бұрын

x^2/3-3x^1/3+2=0 x^1/3=y y^2-3y+2=0 y=[3+-rq(9-8)]/2 y=[3+-1]/2 y1=2 y2=1 x^1/3=2 (x^1/3)^3=2^3 x=8 x^1/3=1 (x^1/3)^3=1^3 x=1

@noname-ed2un 13 күн бұрын

I don't understand line 4

@giannaleoci2328 13 күн бұрын

@@noname-ed2un la formula per risolvere le equazioni di grado2

@noname-ed2un 12 күн бұрын

Can you explain a little bit more

@giannaleoci2328 12 күн бұрын

Scusi -4ac

@Tappygameplay 22 күн бұрын

I dont understand

@carultch 11 күн бұрын

It's just a quadratic equation in disguise. Since you ultimately see two copies of x^(1/3), one of which is squared, you can just substitute a = x^(1/3). This means x^(2/3) is replaced with a^2, and x^(1/3) is replaced with a. Solve for a, and then cube to get the final results.