Question

P(x) = x² - 4x + 3, q(x) = -2x + 4, r(x) = 2x³ - 4x + 5, calcule 3p(x).2q(x) ?

Answer 1

Calcular  3p(x) * 2q(x)

$3(x^2 - 4x + 3) * 2(-2x + 4) \\ \\ (3x^2 - 12x + 9) * (-4x + 8) \\ \\ -12x^3 + 24x + 48x^2 - 96x - 36x + 72 \\ \\ \\=> -12x^3 + 72x^2 - 132x + 72$