Question

6) Calcule o valor das expressões (primeiro as potências):
a- )15 + (+ 5)2
b) 32 – (+ 7)2
c) 18 + (– 5)2
d) 40 – (– 2)3
e) (– 8)2 + 14
f) (– 7)2 – 60
g) (– 2)5 + 21
h) (– 3)3 – 13
i) (– 4)2 + (– 2)4
j) (– 3)2 + (– 2)3
l) (– 1)6 + (– 3)3
m) (– 2)3 + (– 1)5

Answer 1

Resposta:

a-) 15 + (+ 5)²  = 15 + 25 = 40

b) 32 – (+ 7)²  = 32 - 49 = -17

c) 18 + (– 5)²  = 18 +25 = 43

d) 40 – (– 2)³  = 40 + (-8) = 40 - 8 = 32

e) (–8)² + 14  = 64 + 14 = 78

f) (–7)² – 60  = 49 -60 = -11

g) (–2)⁵ + 21  = 25 + 21  = 46

h) (–3)³ – 13  = -27 -13 = -40

i) (–4)² + (– 2)⁴ = 16 + 16 = 32

j) (–3)² + (– 2)³  = 9 + (-8) = 9 - 8 = 1

l) (–1)⁶ + (– 3)³  = 1 +(-27) = 1 - 27 = -26

m) (–2)³ + (– 1)⁵ = -8 +(-1) = -8 -1 = -9

Explicação passo-a-passo: