Question

Prove that the value of the expression:

(125^2+25^2)(5^2-1) is divisible by 3

the value of the expression is 3*_________

Answer 1

Explanation:

`5^(2) - 1 = 25 - 1 = 24`

24 is divisible by 3.

So, (125² +25²)*(5²- 1) is also divisible by 3