Question

fatorando -x² + 1/9 , obtemos:

a) (x+1/3)(x-1/3)
b) (-x+1/3)(x+1/3)
c) (x+1/3)(-x-1/3)
d) (-x+1/3)(-x-1/3)

Ajuda ai​

Answer 1

-x² + 1/9

-(x²-1/9)

-(x-1/3).(x+1/3)

(-x+1/3).(x+1/3) => b)

Answer 2

Resposta:

(B)

Explicação passo-a-passo:

Fatorando -x² + 1/9 , obtemos:

a) (x+1/3)(x-1/3): F

x^2 - x/3 + x/3 - 1/9

x^2 - 1/9

b) (-x+1/3)(x+1/3): V

= - x^2 - x/3 + x/3 + 1/9

= - x^2 + 1/9

c) (x+1/3)(-x-1/3)

= - x^2 - x/3 - x/3 - 1/9

= - x^2 - 1/9

d) (-x+1/3)(-x-1/3)

= x^2 + x/3 - x/3 - 1/9

= x^2 - 1/9

Resp.: (b)