(3. 14-π)? = 1, because it is the zero power of a non-zero number.

(1/2)- 1 = 2 is the reciprocal of 1/2.

2/(√ 3-1) = √3+ 1, multiply up and down (√ 3+1).

(√3-2)^2009 × (√3+2)^20 10=[(√3-2)× (√3+2)]^2009 ×(√3+2)=- 1×(√3+2)=-√3-2

1×2-√3- 1-√3-2=-2√3- 1