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## Award-winning PDF software     ### Instructions and Help about Where Form 8815 Index

Hi there and welcome to another video from Hegarty maths if mr. Haggerty here and this is our fourth video on index form this time we're going to be talking about multiplying indices and trying to generate a rule for that so to start with I've introduced you index form how would a mathematician usually write - x - x - 7 x well they would write 2 7 1 name now I'm going to just break up this two in different ways we know that when you're multiplying multiplying is associative so I can do it in any order I want so let's just say I went like this I did that on its own and then I did those multiplied so 2 here that's 2 to the power 1 these six 2's here are 2 to the power of 6 obviously I know my answer is 2 to the 7 what if I did it in a different order what if I said right I'm going to do them to and then I'm going to do them 5 2 squared multiplied by 2 to the power of 5 is of course 2 to the seventh what if I broke it up in a different order again what if I said I don't know like this and I said right 2 to the 4 therefore multiplied by 2 to the 3 well obviously that's 2 to the 7th and I could break it up in any way I want so let's say I said I don't know I did these two and then I did these 3 and then I did these two last so that would be 2 squared multiplied by 2 cubed multiplied by 2 squared and I know the answers 2 to the 7 now can...