SOLUTION: Find the following ^18sqrt(-7)^18 (this is a power over the beginning of the sqrt symbol.) simplify please help me i am lost, especially with the -7

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find the following ^18sqrt(-7)^18 (this is a power over the beginning of the sqrt symbol.) simplify please help me i am lost, especially with the -7       Log On


   

Question 387453: Find the following
^18sqrt(-7)^18 (this is a power over the beginning of the sqrt symbol.)
simplify
please help me i am lost, especially with the -7
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Use the fact that root%28n%2Cx%5En%29=abs%28x%29


So in this case, n=18 and x=-7, which means that root%2818%2C%28-7%29%5E18%29=abs%28-7%29=7


So root%2818%2C%28-7%29%5E18%29=7