Log₂(x²−3x)=2 ОДЗ х²−3x >0 x(x-3)>0 x∈(-∞;0)∪(3; +∞)
x²−3x =2²
x²−3x -4=0
D= 9+16=25
x₁=(3+5)/2=4
x₂=(3-5)/2= -1
Log₂(x²−3x)=2 ОДЗ х²−3x >0 x(x-3)>0 x∈(-∞;0)∪(3; +∞)
x²−3x =2²
x²−3x -4=0
D= 9+16=25
x₁=(3+5)/2=4
x₂=(3-5)/2= -1