[tex]a) \ W(x) = 8x^{3}+4x^{2}+4x+2 = 4x^{2}(2x+1)+2(2x+1) = (2x+1)(4x^{2}+2) =\\\\= 2(2x^{2}+1)(2x+1)[/tex]
[tex]b) \ W(x) = x^{3}-x^{2}-3x+3 = x^{2}(x-1)-3(x-1) =(x-1)(x^{2}-3)=\\\\=(x-1)((x+\sqrt{3})(x-\sqrt{3})[/tex]
