Question

Sendo P = 2x^4 + x² + x + 3 e
Q = x³ + 2x² – x + 3, calcule:

a) P + Q
b) P – Q
c) Q – P

(Me ajudem pfvrr)

Answer 1

Resposta:

Explicação passo-a-passo:

P = $2x^4 + x^2 +x +3$

Q = $x^3 +2x^2 -x +3$

a) P + Q = $(2x^{4} + x^{2} + x + 3) + (x^{3} +2x^{2} -x + 3) = 2x^4 + x^3 +3x^2 + 6$

b) P - Q = $(2x^{4} + x^{2} + x + 3) - (x^{3} +2x^{2} -x + 3) = 2x^4 - x^3 -x^2+2x$

c) Q - P = $(x^{3} +2x^{2} -x + 3) - (2x^{4} + x^{2} + x + 3) = -2x^4 + x^3 + x^2 -2x$