Question

Considerando p(x) = 3x 3 + 2x + 1 e q(x) = -2x 3 + x – 4, determine:

a) p(x) + q(x)

b) p(x) - q(x)

Answer 1

Resposta:

a) p(x) + q(x)

=3x³ + 2x + 1  -2x³ + x – 4

=x³+3x-3

b) p(x) - q(x)

=3x³ + 2x + 1 -  [ -2x³ + x – 4]

=3x³ + 2x + 1 +2x³ - x + 4

=5x³+x+5