103. 1) (х - 1)^2 + 7 > (х + 4)^2; 2) (1 + х)^2 + Зх^2 < (2х - 1)^2 + 7; 3) (х + 3)(х - 2) ≥ (х + 2)(х - 3); 4) (х + 1)(х - 4) + 4 ≥ (х + 2)(х - 3) - х.