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3. Algebra help Nested fractions

You could've moved the 2 in the c(2a+c) to outside of the parenthesis, because then you can cancel out the 2a on the top and bottom (which you see on the next step). This leaves you with just a+6 /...

1. Community
2. Feature Requests and General Site Feedback
3. possible to speed up videos beyond 2X speed? like 2.5X 3.0X or perhaps higher

sarabsingh86 I can understand this issue. Often when I am just casually browsing YouTube I place videos on 2x speed, just because it's more entertaining. In videos when the creators talk very slowl...

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2. Content Requests and Feedback
3. Medical science course

Hi, Khan Academy used to have medical science courses, but it looks like they no longer exist. However, you can still find all of the content on the official Khan Academy Medicine YouTube channel. ...

1. Community
2. Technical Issues and Workarounds
3. Cannot post Tips and Thanks

Hi, There is a chance that you have been chat banned, so that you may no longer participate in discussions. Please review the community guidelines if you think this may be the case. If you are sure...

1. Community
2. Content Requests and Feedback
3. Fake Sal Khan?

Ok, I received a follow-up with helpful information.

1. Community
2. Content Requests and Feedback
3. Fake Sal Khan?

Don't worry about, it it is obviously not sal (you can see the real profile here, if you are curious). I went ahead and submitted a support ticket to find out, but this issue may not be needed to g...

1. Community
2. Computing Platform Community Discussions
3. How can you make a Calculator?

Hi, This is not a question about site help... I encourage you to try it out or google something to find an easy answer. Go below any project of yours and ask in the "help requests" section, after y...

1. Community
2. General Khan Academy Questions
3. Can I retake a quiz or test?

Yes, absolutely. You can take a quiz or test as much as you want. However, you may lose / gain mastery points depending on performance (if you are going for that).

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2. Classroom Product Questions and Feedback
3. Why can I not use the Geometry (all content) as a course?

Its very useful because you can find everything about a subject in one place.

1. Community
2. Study Group
3. checking if linear equation is afunction.

Hi, to determine if an equation represents a function you should do this thing called the "vertical line test" -- input a value for x. If multiple y values come out, then you do not have a function...