Question

calcule as potências

a) (-7^)2

b) (-4^)1

c) (2,5^)2

d) 6^1

e) (-1,3^)2

F) (-6,0^)3

H) 5^-2

G) -8^2
I) 7^-1

J) (-2^)-2
k) (-10^)-3
l) 4^0

Answer 1

a) (-7) . (-7) = 49
b) -4
c)2,5 . 2,5 = 6,25
d)6
e)(-1,3) . (-1,3) = 1,69
f)  (-6)  (-6)  (-6) = -216
g) (-8)  (-8) = 64
h) $5^{-2} = \frac{1}{5^2} = \frac{1}{25} = 0,04$
i) $7^{-1} = \frac{1}{7^1} = \frac{1}{7} = 1,1428571429$
j) $-2^{-2} = \frac{1}{2^2} = \frac{1}{4} = 0,25$
k) $-10^{-3} = \frac{1}{10^3} = \frac{1}{1000} = 0,001$
l)4⁰ = 0