Question

Dado o polinômio p(x) = 2x³ – 6x² + 4x – 10, determine o valor numérico de p(3). *

Answer 1

Resposta:

$2x^3-6x^2+4x-10\\\\\mathrm{Reescrever\:}10\mathrm{\:como\:}2\cdot \:5\\\\\mathrm{Reescrever\:}4\mathrm{\:como\:}2\cdot \:2\\\\\mathrm{Reescrever\:}6\mathrm{\:como\:}2\cdot \:3\\\\2x^3-2\cdot \:3x^2+2\cdot \:2x-2\cdot \:5\\\\\mathrm{Fatorar\:o\:termo\:comum\:}2\\\\2\left(x^3-3x^2+2x-5\right)$