SOLUTION: 2^(5/2)-2^(3/2)= I would really appreciate someone's help. I need to know how to find the answer too.

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: 2^(5/2)-2^(3/2)= I would really appreciate someone's help. I need to know how to find the answer too.      Log On


   

Question 463345: 2^(5/2)-2^(3/2)=


I would really appreciate someone's help. I need to know how to find the answer too.
Found 2 solutions by edjones, Alan3354:
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
2^(5/2)-2^(3/2)
=sqrt(32)-sqrt(8)
=4sqrt(2)-2sqrt(2)
=2sqrt(2)
.
Ed

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2^(5/2)-2^(3/2)
= 2%5E%281%29%2A2%5E%281.5%29-+2%5E%281.5%29
= 2%2A2%5E%281.5%29-+2%5E%281.5%29
= 2%5E%281.5%29
= sqrt%288%29
= 2sqrt%282%29