##r = (\sqrt (c^2)) + x##
##r = (\sqrt (c))(\sqrt (c)) + x##
##r^2 = (\sqrt (c))(\sqrt (c))^2 + x^2 + 2x(\sqrt(c^2))##
##r^2 = (\sqrt (c^2))(\sqrt (c^2)) + x^2 + 2x(\sqrt(c^2))##
##r^2 = c(\sqrt (c^2)) + x^2 + 2x(\sqrt(c^2))##
That seems to be the only way to forcefully produce a single c out...