Evaluate the expression when a = -3. a^2 +6a +8​

-1! :)

Explanation:
-3^2 + 6(-3) + 8
9 + (-18) + 8
-9 + 8
-1

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?

Um what? rephrase that ?