Question

Simplify. (x−4)(x^2−3x−9)

Answer 1

Answer: x^3-7x^2+3x+36

Step-by-step explanation:

Answer 2

Answer:

$(x - 4)( {x}^{2} - 3x - 9) \\ = x( {x}^{2} - 3x - 9) - 4( {x}^{2} - 3x - 9) \\ = {x}^{3} - 3 {x}^{2} - 9x - 4 {x}^{2} + 12x + 36 \\ = {x}^{3} - 7 {x}^{2} + 3x+36$