(1)(2√3-3√2)^2=12-12√6+18=30-12√6
解方程:(1)2x(x-1)=3(x-1)
(2x-3)(x-1)=0
x1=3/2,x2=1
(2)1/2x^2-4√2x-1=0
方程式不清楚.