Answer:
(x+1)(x+2)(3x−1)
Step-by-step explanation:
(x+1)(x+2)
=x²+x+2x+2
=x²+3x+2
(x²+3x+2) (3x-1)
=3x³+9x²+6x-x²-3x-2 9x²-x²=8x²
6x-3x=3x
=3x³+8x²+3x-2
