(2 ^(1/2) + 2)^2 - 2^(5/2) = [ a^2 = a* a ]
(2^(1/2) + 2) (2^(1/2) + 2) - 2^(5/2) =
2^(1/2) * 2^(1/2) * 2*2^(1/2) + 2*2^(1/2) + 2 *2 - 2^(5/2) = [ We are using a*m * a^n = a^(m + n) ]
2^(1) + 4*2^(1/2) + 4 - 2^(5/2) =
6 + (2)^2 * 2^(1/2) - 2^(5/2) =
6 + 2^ (2 + 1/2) - 2^(5/2)
6 + 2^(5/2) - 2^(5/2) =
6