Question

Sejam os polinômios a(x) = 4x4 + 2x3 – x + 8, b(x) = – x 4 + 8x2 – 6x – 3, calcule a(x) + b(x).

Answer 1

Resposta:

Some os coeficientes de termos semelhantes:

a(x) + b(x) = (4x⁴ + 2x³ – x + 8) + (– x⁴ + 8x² – 6x – 3)

a(x) + b(x) = (4x⁴ – x⁴) + (2x³) + (8x²) + (– x – 6x) + (8 – 3)

a(x) + b(x) = (4.x⁴ – 1.x⁴) + 2x³ + 8x² + (– 1.x – 6.x) + (5)

a(x) + b(x) = 3x⁴ + 2x³ + 8x² – 7x + 5