Question

x^2+6x-6

Answer 1

Are you supposed to factor it? This polynomial is prime (over the integers).

Answer 2

x_1,_2=(-6+/- sqrt(36+24))/2 =(-6+/- sqrt(60))/2 = (-6+/- sqrt(4*15))/2=
=(-6+/- 2sqrt(15))/2 = 2(-3+/- sqrt(15))/2 = -3+/- sqrt(15)