Simplifying Expressions with Negative Exponents - Ex 3 

in 6 minutes and 45 seconds you've taught me more about this than my math teacher can in 5 days

still helping out .... 11 years later

All week at school I have been struggling on this and in 12 mins you have taught me what my teacher had not in 4 class periods. :)

thanks for doing better than my teacher - sincerely, a confused 7th grader

when u take an online class u come here :)

Thank you for explaining this backwards chinese

my teacher couldn't teach me this in a week, you did in 3 min 👏👏

literally mind blown, i feel so dumb after seeing you explain it; you're so good at teaching!!!!!!

THANK YOU!!! My teacher isn't the best so I have had to rely on youtube and it's very hard to find a useful video. I hope I can raise my grade before the semester ends. Thank you, again.

in my class when the teacher teaches me, I'm just like 'dafuq is this...' and then I watched your vid and I'm like 'OMG everything is so clear and shiny!!!! I understand EVERYTHING'

yes, long summer breaks do not do much of anyone good when school starts back! have a great school year, glad the videos help :)

Math Finals today. Last minute going over everything. I love that you go over EVERY step and don't just assume we will know what you did thanks :D

Thank you. I've learned a new thing and that is inverting the fraction to get a positive exponent.That is the easiest way i've learned so far.

I struggled with this, and you helped. THANK YOU!

wow 1 year of struggle then a 5 min video comes to my a aid

This is the only video that helped me, I have mid terms tomorrow and I can finally understand exponents

in 3 minutes and 36 seconds you have taught me more than my teacher

We Greeks discovered math, but you Americans explain them much more beautiful and comprehensible. Thanks a lot!!!!!!

thank you sooooo much needed this for an upcoming test

So much better than my math teacher who just rushes through things! We have a test soon you saved my ass thanks so much!