Question

Is the equation below a sum of cubes
125x3 +169

Answer 1

NO

Explanation:

`\text{Because}\\\\125x^3=5^3x^3=(5x)^3\qquad\bold{it's\ a\ cube}\\\\169=13^2\qquad\bold{it's \ a \ square}\\\\125x^3+169=(5x)^3+13^2`

`13-\text{it's a prime number}`