Wielomian W(x)= (x-3)do kwadratu - (2x + 1) do kwadratu rozłóż na czynniki. ps- proszę o pomoc

[latex]\ W(x)=(x-3)^2-(2x+1)^2=\ =(x^2-6x+9)-(4x^2+4x+1)=\ =x^2-6x+9-4x^2-4x-1=\ =-3x^2-10x+8\ a=-3, b=-10, c=8\ Delta=b^2-4ac=(-10)^2-4*(-3)*8=100+96=196 sqrt{Delta}=14[/latex] [latex]\ x_1=frac{-b-sqrt{Delta}}{2a}\ x_1=frac{10-14}{-6}=frac{-4}{-6}=frac{2}{3}\ x_2=frac{-b+sqrt{Delta}}{2a}=frac{10+14}{-6}=frac{24}{-6}=-4\ W(x)=-3(x+4)(x-frac{2}{3})[/latex]