10^101???????????
64 bit floeting point math giv max av bout 16 digits...get approx
yu hav quadratik with a=1, b=-1*10^51, & c=-4.75*10^101
b^2-4ac=1.9e102
sqrt(1.9e102)=1.378404875209e51
sqrt(...)/21=6.892024376e50
roots=6.8920243760451105e50
& -6.8920243760451105e50