Question

Sendo P(x) = 5x3 + 3x2 – 5x + 8 e Q(x) = x3 + 2x2 – x + 8, calcule: P(x) – Q (x)

Answer 1

$P(x) - Q(x)$
$(5x^3 + 3x^2 – 5x + 8) - (x^3 + 2x^2 – x + 8)$
$5x^3 + 3x^2 - 5x + 8 - x^3 - 2x^2 + x - 8$
$4x^3 + x^2 - 4x$