Pls help w fractions math question

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2

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?