Question

2.(2x²-x+5).3x³-8x²+9x-3

Answer 1

$2.(2x^2-x+5).3x^3-8x^2+9x-3\to\\\\ (2x^4-2x+10).3x^3-8x^2+9x-3\to\\\\ 6x^7-6x^2+30x^3-8x^2+9x-3\to\\\\ \large\boxed{6x^7+30x^3-10x^2+9x-3}$