4th one with sol please

4th one with sol please quadratic equation . . • 3 x +7 •O. then 1/0 + (c) 3/7 (x2 4 X + 12) 2 are (c) -1.3

The given quadratic equation is, 4 x^{2} + 3 x + 7 = 0 Now, α + β = - \frac{coefficient of x}{coefficient of x^{2}} = - \frac{3}{4} Now, αβ = \frac{constant term}{coefficient of x^{2}} = \frac{7}{4} Now, \frac{1}{α} + \frac{1}{β} = \frac{β + α}{αβ} = \frac{- 3 / 4}{7 / 4} = - \frac{3}{7}