SOLUTION: Find the smallest value of a positive integer x such that x^2 + 4 is divisible by 25. A) 4 B) 7 C) 6 D) 5 E) 8

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: Find the smallest value of a positive integer x such that x^2 + 4 is divisible by 25. A) 4 B) 7 C) 6 D) 5 E) 8       Log On


   

Question 366034: Find the smallest value of a positive integer x such that x^2 + 4 is divisible by 25.
A) 4 B) 7 C) 6 D) 5 E) 8
Answer by Sphinx pinastri(17) About Me  (Show Source):
You can put this solution on YOUR website!
If such number exist, it doesn't exceed 25.
So the search domain is rather small and the search can be
easily completed by hand.
11^2 + 4 = 125