Question

3) Calcule as expressões:​

Answer 1

Resposta:

a) 13/20

b) 7/8

c) 57/200

d) 5/4

e) 407/500

f) 865/36

Explicação passo-a-passo:

a) (-1/2)²+2/5=

1/4+2/5=

(5+8)/20=13/20

b) (-1/2)³+1=

-1/8+1=

(-1+8)/8=7/8

c) (2/5)²-(-1/2)³=

4/25-(-1/8)=

4/25+1/8=

(32+25)/200=57/200

d) 2+(-1/2)²-1/2=

2+1/4-1/2=

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

e) 1+(2/5)³-(1/2)²=

1+8/125-1/4=

(500+32-125)/500=407/500

f) (5-1/3)²+(3+1/2)²=

25-10/3+1/9+9+6/2+1/4=

24-10/3+1/9+3+1/4=

27-10/3+1/9+1/4=

(972-120+4+9)/36=865/36