Calcule as expressões: a) (-1/2)² + 2/5 = b) (-1/2)³ + 1 = c) (2/5)² x (-1/2)³ = d) 2 x (-1/3)² - (1/2) = e) 1 + (+2/5)

Vmanjz asked Jan 16, 2022

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43 votes

Calcule as expressões:

a) (-1/2)² + 2/5 =
b) (-1/2)³ + 1 =
c) (2/5)² x (-1/2)³ =
d) 2 x (-1/3)² - (1/2) =
e) 1 + (+2/5) – ( ½)² =

Vmanjz asked Jan 16, 2022

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8 votes

Explanation:

a, 1/4+2/5=13/20

b,-1/8+1=7/8

c, 4/25×-1/8=-1/50

d, 2×1/9-1/2=2/9-1/2=-5/18

e, 1+2/5-1/4=7/5-1/4=23/20

ThomasA answered Jan 22, 2022

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