8a+12b because you multiply 2 by each number. For example 4a times 2 is 8a and 6b times 2 is 12b
Hope that helped :)
Yes, a heptagon has seven sides and fourteen diagonals.
So it would be x^7•y^6
If you need the explanation or you need me to show you the steps then message me.
Hope it helps :)
A2= 1
a3=-3
a4=-7
the common difference is -4