a=2
b= -1
c-6
D=b^2-4ac=1-4×2×(-6)=1+48=497
x1= -b-D/2a=1-7/2×2= -6/4=-1.5
x2= -b+D/2a= 1+7/2×2=8/4=2
a=2
b= -1
c-6
D=b^2-4ac=1-4×2×(-6)=1+48=497
x1= -b-D/2a=1-7/2×2= -6/4=-1.5
x2= -b+D/2a= 1+7/2×2=8/4=2