Solving square-root equations: no solution | Mathematics III | High School Math | Khan Academy

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Sal solves the equation √(3x-7)+√(2x-1)=0, only to find out that the single solution is extraneous, which means the equation has no solution.

High School Math on Khan Academy: Did you realize that the word "algebra" comes from Arabic (just like "algorithm" and "al jazeera" and "Aladdin")? And what is so great about algebra anyway? This tutorial doesn't explore algebra so much as it introduces the history and ideas that underpin it.

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Комментарии
Автор

It is because square root of any positive integer is greater than 0. So, the summation of the square root of two numbers can not be equal to 0.

TheAbrar
Автор

Hey Sal. I wanted to know which software and apparatus do u use for making these study Videos ?

yoman
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why all videos from khan academy are mute but other videos work fine?!

yingzhang
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Why don’t you think they both are equal to 0

quochunglethanh
Автор

what the hell man answer is 8/5 try it..think u messed up something.

akl