Someone
public text v1 · immutable>> a = 2e-4
a =
2.000000000000000e-004
>> b = 8.5e3
b =
8500
>> c = 6e-5
c =
6.000000000000000e-005
>> (-b+sqrt(b^2-4*a*c))/(2*a)
ans =
-4.547473508864641e-009
>> (-b-sqrt(b^2-4*a*c))/(2*a)
ans =
-42500000
>> (-2*c)/(b+sqrt(b^2-4*a*c))
ans =
-7.058823529411765e-009
>> (-2*c)/(b-sqrt(b^2-4*a*c))
ans =
-6.597069766656000e+007