If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.
\(2x^2 - x - 15 = 14\)
\(2x^2 - x - 29 = 0\)
sum = -b/a = -(-1/2) = 1/2
note: sniped
First I simplified the equation. Then I used the quadratic formula and added the two solutions. I got 1/2 as the answer.