💯 Maths

# How to estimate the powers/indices of any given positive number? (eg: 57)?

This can be seen in the example of j^2 \ j^2. Subtract the powers, so j^2 \ j^2 = j^{2 - 2} = j^0. Any number or letter divided by itself is 1. This gives j^2 \ j^2 = j^0 (dividing indices rule) and j^2 \ j^2 = 1, which means j^0 = 1. Laws of indices - summary a^m \times a^n = a^{m + n} a^m \ a^n = a^{m - n} (a^m)^n = a^{mn} a^0 = 1 Hope this helps. to learn more about the powers of any given number. please kindly click on the link below to read more in detail. https://www.bbc.com/bitesize/guides/zpkmpbk/revision/4

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