+189 This question is a bit too broad, but I assume you want to simplify the expression \(5(3x^2 + 9x) - 14\) as much as possible? If so, there is not much to do to simplify this particular expression other than do the expansion within the parentheses.
\(5(3x^2 + 9x) - 14 = 15x^2 + 45x - 14\)
