(x+3)(x-4)-18=0
x^2-4x+3x-12-18=0
x^2-x-30=0
a= 1,b=-1 c=-30
D= 1+120= 121>0
x = 1-11/2 = -10/2 = -5
x = 1+11/2 = 6
(x+3)(x-4)-18=0
x^2-4x+3x-12-18=0
x^2-x-30=0
a= 1,b=-1 c=-30
D= 1+120= 121>0
x = 1-11/2 = -10/2 = -5
x = 1+11/2 = 6