The graph of y = (5x^2 - 9)/(x^2 + 5x + 2) has vertical asymptotes at x = a and x = b. Find a + b.
Whatever x's make the denominator = 0 are the asymptotes.....these are also the roots of the polynomial
x^2 + 5x + 2 = 0
By Vieta, the sum of the roots = -5
a + b = -5