Question

X的立方+9乘以X的平方+26X+24

Answer 1

原式=(x³+8)+(9x²+26x+16)

=(x+2)(x²-2x+4)+(9x+8)(x+2)

=(x+2)(x²-2x+4+9x+8)

=(x+2)(x²+7x+12)

=(x+2)(x+3)(x+4)