#### Answer

(5$s^{2}$ + 3t)(5$s^{2}$ - 3t)

#### Work Step by Step

We know that (a + b)(a - b) = $a^{2}$ - $b^{2}$, so we take the square root of each term in the polynomial to get a and b. We get 5$s^{2}$ and 3t, so the factorization is (5$s^{2}$ + 3t)(5$s^{2}$ - 3t).