Square root of (4/7 times 14/3) =? Many don’t get this BASIC concept about Square Roots!

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[@markprange2430]

11:32 The irrational pi or 2pi is sometimes a divisor.

[@russelllomando8460]

great prob. you simplified WAY easier than i did. thanks for the lesson.

[@racerunner2110]

Dude, you can make equations look simple and solvable. Then you reveal that is not the case unless you know the applicable rules. Then you reveal the rules as you solve the problem. This works for me! You get two tubes of brylcreem for your 50's doo along with 2 plastic combs in case one breaks due to hairspray interference. You are awesome!

[@gregwessels7205]

Thanks for the lesson, KZbin Math Man.

[@MasterofDoom2006]

I got to the problem solution. I never really understood, why it is necessary to remove a square root out of the denominator, but thanks to your explanation it finally clicked, why this must be done! :)

[@thomasmaughan4798]

Great refresher! Early simplification made a huge difference; I multiplied the numerators and then the denominators giving 56/21 which is correct but not very useful. It simplifies to 8/3.

[@johngeverett]

I thought sqrt(8/3) was clear enough. What math principle requires you to go any further? Sometimes these math problems are just an exercise in "see how much more clever i am"

[@colinmaharaj]

I went a bit further, so, root of 4 * 2 / 3 is 2 V(2/3) ( I use V as root). Now 2/3 is 0.666 which I approx to 0.64 and the root of that is 0.8 so I go a little further and say 0.805 or something so the answer is 2.805 (I haven't used the calculator yet)

[@albertmoore4445]

1.633?

[@geneloscowski3070]

I've taught advanced math for 42 years. Your method might be correct but there is an easier way to find the final product.

[@mylittlepitbull3143]

I feel good. Got it fast.

[@natalita1528]

I´m becoming addict to these problems

[@fredrickeffi2143]

Even though I failed it am still glad am learning

[@jamesharmon4994]

I got two thirds radical 6. 😅

[@thenakedtruth0205]

sqrt of 4/7 x sqrt 14/3 simplified to combined 4/1 X 2/3 ~ sqrt of {8/3}? and i wonder...

[@GFlCh]

I got: 2 x [√2/3]

[@panlomito]

SQR (8/3) = SQR(6) . 2/3

[@johnnyllooddte3415]

[@mollymam7153]

2 sqrt 6 divided by 3

[@kamilshere9186]

2.289

[@lamper2]

When I went to school, we got NO part credit! it was right or wrong.

[@bobcornwell403]

I ended up with 2 × (sqrt 2/3).

[@mikeburns703]

I came up with the square root of 8/3.

[@lewisreiman8124]

√8/3=1.633

[@rustylugnut755]

Decimal places in Physics and hand grenades is close enough. But forgetting to rationalize the irrational denominator makes it a complete fail in Math. Bummer. Bad habits have crept into my math over years of engineering.

[@rodrodrigues5402]

In one of these steps you haVe a 7 in the numerator. That is not correct.

[@davew.5199]

This doesn't reault in an exact number. So it's not a good challenge.

[@ellentronicmistress4969]

It's exactly why it is a good challenge: maths isn't always tidy.

[@derekborkent2899]

The square root of 8/3 = 2.63... in decimals, but your answer of 2 × the square root of 2÷3= .94... did I miss something?

[@markprange2430]

They each equal 1.63....

[@TheSimCaptain]

But apparently, the numerator can contain an irrational number.

[@ellentronicmistress4969]

@@TheSimCaptain Yes it's considered more acceptable. I think it's a throwback to a time before calculators when it was just easier to work with irrational numbers as numerators rather than denominators. Someone might correct me though.

[@RubyAtif]

Please try to shorten the video without cutting the explanation

[@josebeltran6394]

Why? He explained with plenty of details. I suggest you instead change speed of the video to 1.25X

[@kk6aw]

1.333333333

[@olenfersoi8887]

I agree with others...Why not just take sqrt of (8/3) Answer is 1.63 and less steps than shown.

[@ellentronicmistress4969]

In a GCSE exam in the UK you'd be expected to know how to express the answer as a fraction with surds. I'm not sure, but I assume that's the point here too?

[@tschantz]

That is how I’d punch it into a calculator, yeah. But technically sqrt(8/3) is in improper form as there’s a square root being applied to the denominator.

[@keninnewmexico8763]

At the 3 minute mark, 4 and 2 are multiplied, after a bunch of begging for subscribers and another 3 minutes, 4 and 2 are separated out.

[@StephanBuchin]

I cut this by half watching his videos at 2x speed 😎

[@johnswanson4759]

square root of 8/3

[@jamesharmon4994]

This equals radical (4 * 2/3). Pull the radical 4 out as 2, leaving 2 * radical (2/3). This is equal to 2 * (radical(2) / radical (3)). This equals (2 * radical (2)) / radical (3). Multiply top and bottom by radical (3) to "rationalize" the denominator gives you (2 * radical(2) * radical (3)) / 3. Then simplify this to (2 * radical (6)) / 3.

[@ldewproductions7271]

Square root of 8/3 is 1.633

[@harrymatabal8448]

That's your convergebt opinion. Who needs you

[@keithschipiour4684]

I am 60 don’t know what the f a square root is and don’t give damn

[@thomasmaughan4798]

Imagine the 7 billion or so people that also do not know and do not care, made a comment to that effect.

[@stevenjohnson1143]

3 times the square root of 2

[@kamilshere9186]

2.289