Question

Решите неравентсво: $\frac{x^2}{4} \ \textless \ 12- \frac{x}{2}$

Answer 1

$\frac{ x^{2} }{4} \ \textless \ 12- \frac{x}{2} \\ x^{2} \ \textless \ 48-2x \\ x^{2} +2x-48\ \textless \ 0 \\ x^{2} +2x-48=0 \\ D=4+192=196;x_{1}=6;x_{2}=-8$

__+___-8____-___6___+____

x∈(-8;6)