Fractional exponents with numerators other than 1 | Algebra I | Khan Academy

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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[zackvn]

Is anyone else here because of an upcoming test in math? :)

[acecrust]

Teacher gave us these questions without teaching us how to do them, this really helped!

[hyper]

Me in class:😱
Me in Khan Academy: BIG BRAIN

[implicit]

got stuck in calc. this saved me ...THANKS!!!

[probablygrady]

pro tip: take the cube root before you square it so you're dealing with smaller #'s

[AlphaSparky]

You can also do the equation: x^n/m --> (m X square root of x)^n ---> m X (multiply) Square Root of x with x having its exponent value as n. This sounds confusing but it is a lot easier.

[cantthinkofausername]

Finally tysm but everything has to make sense for me and i dont get WHYYY you flip 8/27 to 27/8 how does that make the negative power to a posotive HOW???

[HJCars]

wow, thanks, also BTW surprised that there are only 14 comments, this is 15 I guess. Great vids!!

[brianmyers]

man this is algebra 1? Im in precalculus trying to learn this.

[MadaraUchiha-cguu]

By far the best explanation i have gotten, fast explaination without any time waste and the teacher really knows how to explain a concept without confusing the students unlike my teacher

[kaizoniumnh]

Thank you much this was amazing
and helps alot

[leewonkim]

thanks Khan u made mine and my grandson's day .!

[Magpi]

If I had √3 and I need it in its ratio now form how do I get I there?

[joegleiter]

thank you... way better than my school

[yesserlabidi]

This guy is the best math teacher in khan academy, and I wish that guy of 1 blue 3 brown just get fired from khan academy

[Mimi-mqwj]

Wait so we can have multiple answers which mean the same thing right? Then which one would we recommend to use ?

[tmpecho]

If for example 4 to the power of 3/4 are you going to cube it then? And if a to the power of b/c are you going to take a to the power of b?

[rudyg]

Wait im still confused about 27 to the 2/3 power switched to the 27 1/3 power squared then equals 3 squared over 2 squared!!!

[You-lwcn]

I always come to Khan when it's the day before the math test and I don't understand what im supposed to be doing

[HeyItsKora]

Hey Sal, ol' buddy ol' pal; I don't think you realise that we really really don't care that much about the whole colour coding thing.. I mean, I can only really speak for myself, but you go into so much trouble to colour code everything, when it really makes 0 difference, I honestly do not even see the colours, for all intents and purposes, when I watch your (fantastic) videos, I am basically colour blind. I can tell that this squared is the same as that squared, or that this number comes from that number...
No criticism though, you are absolutely divine, and should be awarded a Nobel Prize for revolutionising free education (if you haven't already!!)