Please help me

Place the indicated product in the proper location on the grid.
1.)
(a + 3)(a - 2)
2.)
(x 2 + 4)(x 2 - 4)
3.)
answer in descending powers of x.
(x 2 + 3x + 1)(x 2 + x + 2)

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90