We have the next expression
[tex]4(s-3)+s(s-3)[/tex]And we must find the greatest common factor
[tex]\begin{gathered} 4(s-3)+s(s-3) \\ \text{ The common factor that we can see is (s - 3)} \\ \text{ So, the greatest common factor is } \\ (s-3) \end{gathered}[/tex]Then, we must write the expression in factored form
[tex]\begin{gathered} 4(s-3)+s(s-3) \\ \text{ Using the common factor (s - 3)} \\ (4+s)(s-3) \end{gathered}[/tex]So, the factored form is
[tex](4+s)(s-3)[/tex]ANSWERS:
1.
[tex]s-3[/tex]2.
[tex](s-3)(4+s)[/tex]