3x(квадрат) - 4x-4 сократите дробь 2-x

3x²-4x-4

D=(-4)²-4*3*(-4)=16+48=64

x1= (4-√64) /2*3 =  (4-8) /6 = -4/6=-2/3

x2 = (4+√64) /2*3 =  (4+8) /6 =12/6=2

3x² -4x-4    =    (x-2)(x+2/3)       =       -(x+2/3)

2-x                           2-x