б) ℓog2x+3(5x2+11x+3)=2
5x²+11x+3=(2x+3)²
5x²+11x+3=4x²+12x+9
5x²+11x+3-4x²-12x-9=0
x²-x-6=0
D = 1²-4*1*(-6)=1+24=25
x1=(1+5)/2=3
x2=(1-5)/2=-2
б) ℓog2x+3(5x2+11x+3)=2
5x²+11x+3=(2x+3)²
5x²+11x+3=4x²+12x+9
5x²+11x+3-4x²-12x-9=0
x²-x-6=0
D = 1²-4*1*(-6)=1+24=25
x1=(1+5)/2=3
x2=(1-5)/2=-2