2.
x^2-5x-24=0
D=11^2
x=5+11/2=8
x=5-11/2=-7
x(10x-7)=0
x=0
10x=7
x=7/10
3.2ab^2/b(ab-4)=2ab/ab-4
4.5x-5+7-1-3x-6<0
2x<5
x<2,5
2.
x^2-5x-24=0
D=11^2
x=5+11/2=8
x=5-11/2=-7
x(10x-7)=0
x=0
10x=7
x=7/10
3.2ab^2/b(ab-4)=2ab/ab-4
4.5x-5+7-1-3x-6<0
2x<5
x<2,5