Answer:
5x(5y + 1)
Explanation:
The only way to simplify this is to factor out GCF. We cannot factor out into binomial terms because there is no x² or y² term.
When we first glance at the expression, we can see that we can take out a 5:
5(5xy + x)
Afterwards, we can see that we can take out an x:
5x(5y + 1)
That would be our answer in the most simplified way.