Answer:
1. 2ab(4a²+3ab-7b²)
=8a³b+6a²b²-14b³
2. -3xy(x³y³-3x²y+7xy²)
= -3x⁴y⁴+9x³y²-21x²y²
3. (x+2)(x²-3x+2)
= x³-3x²+2x+2x²-6x+4
=x³-x²-4x+4
4. (2x-1)(2x²+4x+3)
= 4x³+8x²+6x-2x²-4x-3
= 4x³+6x²+2x-3
5. (12y²-9y+16)(8y³-14y+5)
=
6. 5a⁴/b
7. 4abc²-6a³bc+11a^5b^5c³
8.
9.
10.
