Пожалуйста, пожалуйста ! помогите срочно 3x^2+11x+5<x^29x^2+14x-3<4x^2

$1)$

$3 x^{2} +11x+5\ \textless \ x^{2}$

$3 x^{2} +11x+5- x^{2} \ \textless \ 0$

$2 x^{2} +11x+5 \ \textless \ 0$

$D=11^2-4*2*5=121-40=81$

$x_1= \frac{-11+9}{4} =-0.5$

$x_2= \frac{-11-9}{4} =-5$

+ - +
------------(-5)-----------------(-0.5)----------------
/////////////////////////

$x$ ∈ $(-5;-0.5)$

$2)$

$9 x^{2} +14x-3\ \textless \ 4x^2$

$9 x^{2} +14x-3-4x^2\ \textless \ 0$

$5 x^{2} +14x-3\ \textless \ 0$

$D=14^2-4*5*(-3)=196+60=256$

$x_1= \frac{-14+16}{10}=0.2$

$x_2= \frac{-14-16}{10}=-3$

+ - +
------------(-3)-----------------(0.2)----------------
/////////////////////////

$x$ ∈ $(-3;0.2)$