Math Problem : AA.3 Transformation of formula

3 × 5 × 5 × 5 + 4 × 5 × 5 + 2 × 5 + 1 = A × A × A + B × A × A + C × A + 3. 

Find A, B and C, respectively.

A, B and C are the integers from 1 to 9. 









Answer
A = 7, B = 2, C = 6