X-2X-3X+4 Multiply using expansion.
Expanding using expansion formulas
As we know, x-ax-b=x2-ax-bx+ab
Then,
X-2X-3X+4=X2-3X-2X+6X+4=X2-5X+6X+4=X3-5X2+4X2+6X-20X+24=X3-X2-14X+24
Thus, X-2X-3X+4=X3-X2-14X+24