You could write is as 6^(1/3) or 6^(1/5).
If you wanted to use the radical symbol, you would use a superscript 3 or 5 (respectively) in front of the radical symbol. Unfortunately, this browser does not support such luxuries.
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easy, lets take radical negative 3 for example. you can take out a "i" because i = the radical negative one. There fore the answer is i radical 3.
15 = 31*51
Oh, dude, it's like so simple. To write 536 in index form, you just express it as 5.36 x 10^2. See, you take the decimal point and move it two places to the left to get that power of 10. Easy peasy, right?
9 is the smallest natural number that is odd and composite: 9=3*3. 15 is the smallest natural number that is odd and a product of two numbers different from one and from each other: 15=3*5.
12 radical 2