SAT2数学题,有关复数
1.Ifi(复数里的那个i)isarootofx^4+2x^3-3x^2+2x-4=0,theproductoftherealrootsis
A.-4B.-2C.0D.2E.4
2.Thenatureoftherootsoftheequation3x^4+4x^3+x-1=0is
A.3positiverealrootsand1negativerealroot
B.3negativerealrootsand1positiverealroot
C.1negativerealrootand3complexroots
D.1positiverealroot,1negativerealroot,and2complexroots
E.2positiverealroots,1negativerealroot,and1complexroot
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