2.6 Using the Venn diagram to prove that (x1 + x2 + x3) • (x1 + x2 + x3) = x1 + x2

Answer this for me mate. Much appreciated.

Let A = B = C = {x 1 x is a real number}. Let f: A → B and g: B → C be defined as follows: f(a) 2a +3 and g(b) 6² Compute the following: (a) (fog)(2) (b) (gof)(2) (c) (gof)(x) (d) (fog)(x) (e) (fof)(y) (f) (gog)(y) = =

Show that x19 + x8 + 1 has multiple zeros in some extension of Z3.