Question

第一个括号后面是2次方

Answer 1

1.原式=(9-6根号3+3)/4+(根号6+根号2)^2/(6-2)

=(12-6根号3)/4+(6+2+4根号3)/4

=(20-2根号3)/4

=5-根号3/2

2,原式=[根号3+(1-根号2)][根号3-(1-根号2)]=3-(1-根号2)^2=3-(1+2-2根号2)=2根号2