Answer
$5s^2-4s-12$.
Work Step by Step
The given expression is
$=(5s+6)(s-2)$
Distribute $(s-2)$ to each term of $(5s+6)$.
$=5s(s-2)+6(s-2)$
Use distributive property.
$=5s(s)+5s(-2)+6(s)+6(-2)$
Multiply.
$=5s^2-10s+6s-12$
Combine like terms.
$=5s^2-4s-12$
Hence, the product is $5s^2-4s-12$.