Question

{5} is the solution set of
(drop down menu:
x^2-5x+25=0,
x^2+10x+25=0,
x^2-10x+25=0,
x^2+5x+25=0).

Answer 1

x² - 10x + 25 = 0
(x-5)² = 0
x - 5 = 0
x=5

Answer: C.