1) A polynomial has roots and and no other roots. Let and Then,
(A) and must have opposite signs.
(B) and can be both positive but not both negative.
(C) and can be both negative but not both positive.
(D) We do not have enough information to compare the signs of and .
2) All the inner angles of a -7 gon are obtuse , their sizes in degree being distinct integers divisible by 9. What is the sum(in degree) of the largest two angles?