1)x2-5x-6=0
D=25=24=49
x1=(5-7)/2=-1
x2=(5+7)/2=6
2)3x2-x-2=0
D=1+8=9
x1=(1-3)/2=-1
x2=(1+3)/2=2
3)2x2/x-2=7x-6/x-2
2x2-7x+6=0
D=49-48=1
x1=(7-1)/4=6/4=3/2=1 1/2
x2=(7+1)/4=2
1)x2-5x-6=0
D=25=24=49
x1=(5-7)/2=-1
x2=(5+7)/2=6
2)3x2-x-2=0
D=1+8=9
x1=(1-3)/2=-1
x2=(1+3)/2=2
3)2x2/x-2=7x-6/x-2
2x2-7x+6=0
D=49-48=1
x1=(7-1)/4=6/4=3/2=1 1/2
x2=(7+1)/4=2