Question

Considere os polinômios P(x)=x³+2x²-3 e Q(x)=x²+x+1 , determine:
b) P(x).Q(x)=

Answer 1

(x^3+2x^2-3)×(x^2+x+1)=
=x^5+x^4+x^3+2x^4+2x^3++2x^2-3x^2-3x-3=
=x^5+3x^4+3x^3-x^2-3x-3