Question

What are the solutions of the equation

Answer 1

c^2 - 10c = 0
c^2 - 10c + 25 = 25
(c - 5)^2 = 25
c - 5 = sqrt 25
c = 5 (+-) sqrt 25
c = 5 (+-) 5

c = 5 + 5 = 10
c = 5 - 5 = 0

solutions are 0,10