Question 468454


{{{f(x)=(x+20)(x-15)(x+8)}}}.....multiply


{{{f(x)=(x^2-15x+20x-300)(x+8)}}}


{{{f(x)=x^3+8x^2-15x^2-120x+20x^2+160x-300x-2400}}}


{{{f(x)=x^3+13x^2-260x-2400}}}