Question

Alguém poria me ajudar?, nesses exercícios

Answer 1

Resposta:

Explicação passo a passo:

1a.

2^-3+(1/2)^-1-2^4=

(1/2)^3+2-16=

1/8+2-16=

1/8+16/8-128/8=

17/8-128/8=

-111/8

b.

1/2+(1/5)^-1-(2/3)^2+5^0=

1/2+5-4/9+1=

9/18+90/18-8/18+18/18=

99/18-8/18+18/18=

91/18+18/18=

109/18

c.

5^-2-1/3+2^-2-3^-1=

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

1/25-1/3+1/4-1/3=

12/300-100/300+75/300-100/300=

-88/300+75/300-100/300=

-13/300-100/300=

-113/300

2.

12.x^2.y^3z^4=

12.3^2.(-2)^3(-1)^4=

12.9.(-8).1=

-864