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Writing Numbers in Index FormWe know that: So, we can write 8 as 23.Likewise, 27 can be written as 33and 125 can be written as 53.So far, we have considered numbers that have a group of the same factors. Sometimes, a number has more than one group of the same factors as shown in the following example.Example 20Write 200 in simplest index form.Solution:Key Termsimplest index form
uses of index
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125 x 125 = 15625
20 percent off 125 = 10020% off of 125= 20% discount applied to 125= 125 - (20% * 125)= 125 - (0.20 * 125)= 125 - 25= 100