y = 2x2 + 9x - 35 2x2 + 9x = 35 x2 + \(\frac{9}{2}\) = \(\frac{35}{2}\) x2 + \(\frac{9}{2}\) + \(\frac{81}{16}\) = \(\frac{35}{2}\) = \(\frac{81}{16}\) (x + \(\frac{9}{4}\))2 = \(\frac{361}{16}\) x = \(\frac{-9}{4}\) + \(\frac{\sqrt{361}}{16}\) x = \(\frac{-9}{4}\) + \(\frac{19}{4}\) = 2.5 or -7 -7 < x < \(\frac{5}{2}\)