algebra precalculus - Why is $(5sqrt{5p}-3sqrt{5q})(5sqrt{5p}+3sqrt{5q}) equiv 5(5p-3q)(5p+3q)$?

I was working on the difference of two squares, $125p^2-45q^2$

Writing my answer,

$$(5\sqrt{5}p-3\sqrt{5}q)(5\sqrt{5}p+3\sqrt{5}q),$$ onto Pearson, I got a popup that said my answer was equivalent to the correct answer but in incorrect form. Apparently, the correct answer is $$5(5p-3q)(5p+3q).$$

Why is that? I'm failing to see the intuition here.