Решите неравенство (2x-1)<3 (3x+1)>=1

Question

Решите неравенство

(2x-1)<3<br>


(3x+1)>=1

Answer 1

1/(x-1)=tt²+2*t-3=0D=4+12=16t=(-2±4)/2=-1±2t1=11/(x-1)=1x-1=1x1=2t2=-31/(x-1)=-31=3-3*x3*x=2x2=2/3