А) а^2+3\geq 2 а

1) (a^2+3) / (g*e*q)*2*a (2*a^3+6*a) / (e*g*q) Otvet: 2*a*(a^2/q+3/q) / (e*g) 2) (2 а-1) (2 а +1) \leq 4 а^2 (2*a-1)*(2*a+1) / (l*e*q)*4*a^2 (16*a^4-4*a^2) / (e*l*q) Otvet: 4*a^2*(2*a+1)*(2*a/q-1/q) / (e*l)