Question

Multiplicacao de polinomios

Answer 1

= 3x².(2x + 1).(2x - 3)

= 3x².(4x² - 6x + 2x - 3)

= 3x²(4x² - 4x - 3)

= 12x⁴ - 12x³ - 9x²

Answer 2

$3x^2(2x+1)(2x-3)\to \\\\ 3 x^{2} (4 x^{2} -6x+2x-3)\to \\\\ 3 x^{2} (4 x^{2} -4x-3)\to \\\\ 12x^4-12x^3-9x^2$