Răspuns :
E(x) = 3x(x-2) +(x-2)(x-2) -4(x-2)
E(x) = (x-2)(3x+x-2-4)
E(x) =(x-2)(4x-6)
E(x) = (x-2)(3x+x-2-4)
E(x) =(x-2)(4x-6)
E(x)=3x(x-2)+(x-2)^2-4(x-2)
E(x)= (x-2)(3x+x-2-4)
E(x)= (x-2)(4x-6)
E(x)= (x-2)(3x+x-2-4)
E(x)= (x-2)(4x-6)