Question

(2x3-3x2-5x-12)÷(x-3)

Answer 1

Utilizando o Método das chaves

  2x³-3x²-5x-12           |   x-3
-2x³ +6x²                        2x²+3x +4 =Q(x)
3x²-5x-12
-3x²+9x
4x-12
-4x+12
0=R(x)

Answer 2

2x^3 -3x^2 -5x-12 /(x-3)  2x^3 .(x-3) =2x^2+3x+9 R =39∧