What would be the best method to use in order to solve the following quadratic equation?

4x^2+29x-60=0

a) Factoring

b) Quadratic Formula

c) Taking the Square Root

d) Completing the Square

Quadratic Formula

a=4

b=29

c=-60

x = - 29 + - sq root (841 - 4*4*-60) / 2*4

x = - 29 + - sq root (841 + 960) / 8

x = - 29 + - sq root (1,801) / 8

x = [-29 + - 42.4381903478] / 8

x1 = 13.4381903478 / 8

x1 = 1.6797737935

x2 = [-29 - 42.4381903478] / 8

x2 = - 71.4381903478 / 8

x2 = - 8.9297737935