Question

Sejam os polinômios p(x) = −2x³ + x − 6 e s(x) = 3x³ − x² + 3

Calcular
(a) (−5)[p(x)]

(b) p(x) + s(x)

(c) (x + 1)[s(x)]

Answer 1

Resposta:

Explicação passo-a-passo:

A) (−5)P(x)=(−2)(−5)x3+(−5)x−6(−5)

(−5)P(x)=10x3−5x+30

B) P(x)+S(x)=−2x3+3x3−x2+x+3−6=x3−x2+x−3

C) (x+1)S(x)=(x+1)(3x3−x2+3)=

=3x3⋅x−x2⋅x+3⋅x+3x3−x2+3=

=3x4+3x3−x3−x2+3x+3=

=3x4+2x3−x2+3x+3