Question

(1-2√3)(1+2√3)-(2√3-1)²计算过程和结果？

Answer 1

根式计算
原式=1²-（2√3）²-（2√3）²+2x2√3-1²
=4√3

Answer 2

(1-2√3)(1+2√3)-(2√3-1)²
=[1²-(2√3)²]-(2√3-1)²
=(1-12)-(1-4√3+12)
=1-12-1+4√3-12
=4√3-24