Question

obtain all zeros of 2 x ki power 4 minus 10 x cube + 5 x square + 15 x minus 12 if two of its zeros are root 3 by 2 and minus root 3 by 2

Answer 1

all zero are
$\sqrt{3 \div 2} \\ - \sqrt{3 \div 2} \\ 4 \\ 1$
are the zeros of polynomial