Log1/2 (2x-1)+log1/2 (x+3)=-2
Log1/2(2x-1)(x+3)=-2 log1/2(2x^2+5x-3)=-2 (1/2)^-2=2x^2+5x-3 2x^2+5x-3=4 2x^2+5x-7=0 x=1 x=-3,5