Good evening Gloria
3t(t+2)-3t² for t=19
Well the first thing we need to do is to replace 19 everywhere we see T
So let's do it together
3(19)(19+2)-3(19)²
57(21)-3(361)
1197-1083
= 114
I hope that's help and if you have questions please let me know :)
Please give my answer a Thanks and stars ↓
