I need some help please. I don't understand the math that we are doing. Please explains to me in detail how to do radical expressions and like how to simplify them and stuff. I don't get it and it would be much appreciated.

Question

here is one of the problems. Also my computer does not show the on root sign thing.

root sign 8n^3 (to the power of three)
          ____

81

Casey · Answer

since you can't find the square of 8 you look inside that number to see what other numbers can be squared.

For instance, 8 is divisible by 2 and 4. You can find the square root of 4. That is the first step.

Now on n^3 you simply put it in terms that are divisible by 2. so you can break n^3 up into n^2 and n^1 because that still equals n^3.

Now all that is left is your problem: SQUARE ROOT 2X4 n^1 N^2
since you can find the square root of 4 and n^2 can be divided by two your answer would be
2N^1 SQUARE ROOT 2 n^1

hope that helps

dd · Answer

i need to check my answers for my THA #27