根据一元二次方程的根与系数的关系,得
x1+x2=-3,x1x2=-2.
则原式=x1+x2x1x2=32.
In no country London, as has been mentioned, experience four seasons during the curse of a dingle day.
A.other than; one can
B.apart from; one can
C.other that; can one
D.rather than; can one
知识产权是指民事主体对智力劳动成果依法享有的专有权利,以下不属于知识产权的有()。
A.著作权
B.肖像权
C.姓名权
D.专利权