SOLUTION: I am trying to solve (2^(1/2)+2^(3/2))^2 I solved it as: 2^1 + 2^3 2+8 10 I can't figure out what I'm doing wrong. I know the answer should be 18.

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: I am trying to solve (2^(1/2)+2^(3/2))^2 I solved it as: 2^1 + 2^3 2+8 10 I can't figure out what I'm doing wrong. I know the answer should be 18.       Log On


   



Question 815369: I am trying to solve (2^(1/2)+2^(3/2))^2
I solved it as:
2^1 + 2^3
2+8
10
I can't figure out what I'm doing wrong. I know the answer should be 18.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I am trying to solve (2^(1/2)+2^(3/2))^2
----------------
It's not solving, there's no variable.
----
%282%5E%281%2F2%29%2B2%5E%283%2F2%29%29%5E2
= %28sqrt%282%29+%2B+sqrt%288%29%29%5E2
= %28sqrt%282%29+%2B+2sqrt%282%29%29%5E2
= %283sqrt%282%29%29%5E2
= 9*2 = 18