Inéquations réductibles au premier degré

Résoudre

ex[1]=((2x-1)(3-x)≤0);
ex[2]=((5x-7)(3-4x)>0);
ex[3]=(-5x (x-1)(x-7)≥0);
ex[4]=((2x+1)^2 *(5-x)>0);
ex[5]=(x^2*(5-3x)/(2x+3)≥0);
ex[6]=( (4x^2-9)/(x+1)≥0);
ex[7]=((3-4x)(1-x^2)/(x*(x+2))≤0);
ex[8]=((3x+1)(2+3x)x^3/(x-3)>0);
ex[9]=( x(x^2-9) ≤(9-x^2));
ex[10]=( (x+4)(x-1)≥ (x-2)(x+1));

Do[Print[i,") ",ex[i]],{i,10}]

Solutions:

Do[sol[i]=Ensemble[ex[i],x];
Print[i," ) S = ",sol[i]],{i,10}]