Find the solution set of sets A, (negative infinity, -3) and (1, positive infinity) and the solution set of set B (a- radical sign (a2+ 1), a+ radical sign (a2+ 1)). Because there is only one integer, this integer must be -4 or.

The first one: radical number A (A2+ 1) < -4, radical number a+ (A2+ 1) < =2.

Second, the root symbol (a2+ 1)>=-4, and the root symbol (a2+ 1)>2.

The first solution is x; 3/4