[tex]f)\\w(x)=x^5-4x^3\\w(x)=x^3(x^2-4)\\w(x)=x^3(x-2)(x+2)\\\\g)\\w(x)=2x^6+3x^5\\w(x)=x^5(2x+3)\\\\h)\\w(x)=5x^7-2x^5+0,2x^3\\w(x)=x^3(5x^4-2x^2+0.2)\\\\i)\\w(x)=x^3+3x^2-6x-8\\w(x)=(x-2)(x^2+5x+4)\\w(x)=(x-2)(x+1)(x+4)\\\\\\j)\\w(x)=2x^4-5x^3+5x-2\\w(x)=(x-2)(2x^3-x^2-2x+1)\\w(x)=(x-2)(x-1)(2x^2+x-1)\\w(x)=(x-2)(x-1)(x+1)(2x-1)[/tex]
