SOLUTION: The index is 6, the number in the radical is 128.....ive done a factor tree and broke it down into 6 two's...whats next??

Algebra ->  Radicals -> SOLUTION: The index is 6, the number in the radical is 128.....ive done a factor tree and broke it down into 6 two's...whats next??      Log On


   

Question 31059: The index is 6, the number in the radical is 128.....ive done a factor tree and broke it down into 6 two's...whats next??
Answer by acerX(62) About Me  (Show Source):
You can put this solution on YOUR website!
You are trying to find the sqrt%28128%29 your factor tree should yeild SEVEN 2's for every pair of 2's you bring one out of the radical...
sqrt%28128%29
sqrt%282%2A2%2A2%2A2%2A2%2A2%2A2%29
2%2A2%2A2%2Asqrt%282%29
8%2Asqrt%282%29