Respuesta :
Hi, there.
____
Substitute 19 for t.
[tex]\boldsymbol{3(19)(19+2)-3(19)^2}[/tex]
Simplify.
[tex]\boldsymbol{57(21)-3(361)}[/tex]
Simplify.
[tex]\boldsymbol{1,197-1,083}[/tex]
Simplify.
[tex]\boldsymbol{114}[/tex]
Hope the answer - and explanation - made sense,
happy studying!!
Answer: 114.
Step-by-step explanation:
[tex]3t(t+2)-3t^2=\\3t*t+3t*2-3t^2=\\3t^2+6t-3t^2=\\6t.\\t=19\\6*19=\\114.[/tex]
