Question

sendo a (x)=x^3-x^2-5x+2, calcule o valor numérico de A (1/2)

Answer 1

Resposta:

= - 5/8

Explicação passo-a-passo:

a (x)=x^3-x^2-5x+2, calcule o valor numérico de A (1/2)

x = 1/2

a(1/2) =(1/2)^3 - (1/2)^2 -5.(1/2) + 2

a(1/2) = 1/8 - 1/4 - 5/2 + 2

MMC (8,4,2) = 8

a(1/2) = ( 1 - 2 - 4.5 + 8.2)/8

a(1/2) = ( 1 - 2 - 20 + 16)/8

a(1/2) = (-1 - 4)/8

a(1/2) = - 5/8