8x2-2x-3=0
A=8 b=-2 c=-3
D=b2-4ac=(-2)2-4*8*(-3)=4+96=100
X1=2+10/2*8=12/16=3/4
X2=2-10/2*8=-8/16=-0.5
(x+3/4) (x-0.5)
8x2-14x+6=0
A=8 b=-14 c=6
D=b2-4ac=(-14)2-4*8*6=196-192=4
X1=14+2/2*8=16/16=1
X2=14-2/2*8=12/16=3/4
(x+1) (x+3/4)
(x+3/4) (x-0.5) / (x+1) (x+3/4) = (x-0.5) / (x+1) = (2-0.5) / (2+1)=1.5/3=0.5