In this video I'm going to show you how to do with fractional powers so as an example I mean something like 16 to the power of 1/2 the power on that number is a fraction there are certain things you just need to learn the power of 1/2 is the same as a square root so 16 to the power of 1/2 is the same as the square root of 16 square root of 16 is 4 if you're doing higher level you need to remember it's not just for it could also be minus 4 because minus 4 times minus 4 will also give you 16 because minus times a minus makes a plus so it's 4 or it's minus 4 me write that down using this plus or minus symbol here that means plus 4 and minus 4 so if you had 25 to the power of 1/2 that's the same as square root of 25 which is 5 but it could be plus 5 or minus 5 so the power of 1/2 means a square root if you had the power of 1/3 power third means the same as cube root so the cube root we usually write down with the root symbol but was it as a 3 outside it and if we're trying to find the cube root of 8 that means we're trying to find some number that when we write it down 3 times and times that number together we get 8 now if we have 2 times 2 times 2 2 written down 3 times 2 times 2 is 4 times by 2 is 8 so the cube root of 8 is 2 8 to the power of 1/3 is 2 if we look at another one if we look at...

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