Consider the polynomial \(4x^5 - 20x^4 - 36x^3.\) It has three terms and their greatest common factor is \(4x^3.\)
Since
\(4x^5=4x^3\cdot x^2,\\20x^4=4x^3\cdot 5x,\\36x^3=4x^3\cdot 9,\)
then
\(4x^5 - 20x^4 - 36x^3=4x^3(x^2-5x-9)\) (you write in brackets the same sign as the corresponding term has).
Answer: correct choice is D.
