Two TV shows

I've been looking at two new series on Crave TV.

Deutschland 83 is a German miniseries about a 1983 East German who gets manipulated into spying in a West German general's office under a stolen identity, so the East German government will give his mother priority for a kidney transplant operation.  It's a terrific show, intelligent and exciting. (We rarely appreciate how lucky we were to survive the irresponsibly hawkish Reagan presidency.) Those little East German cars looked curious.

I've also started the remake of Roots.  It isn't as cheesy as the 1977 original, but it still lacks subtlety.   Alex Haley's book is way better than either version.  Forrest Whittaker has a good role as Fiddler. (It was a good role for Louis Gossett.) At least it lacks the bad acting of white stars like Edward Asner!

Last night I found a puzzle at brilliant.com where you have to figure out x where (x+1)^1/2 - (x-1)^1/2 = (4x-1)^1/2.  I think their answer is that there's no x that fits the equation, but that assumes that these are all positive square roots.  x=5/4 works, when the second term is a negative root while the others are positive, or when the second one's positive while the others are negative!