1) Calcule as potências: a) -7^2= f) -2^-2= b) (-5)^2= g) (-(2)/(5))^3= c) 2^5= h) (-(3)/(2))^-4= d) (-2)^5= i) (-(1)/(2))^6= j) 6^-2= e) -(-3)^4=

Vamos calcular as potências:

a) $$-7^{2} = -49$$

f) $$-2^{-2} = -\frac{1}{4}$$

b) $$(-5)^{2} = 25$$

g) $$(-\frac{2}{5})^{3} = -\frac{8}{125}$$

c) $$2^{5} = 32$$

h) $$(-\frac{3}{2})^{-4} = \frac{16}{81}$$

d) $$(-2)^{5} = -32$$

i) $$(-\frac{1}{2})^{6} = \frac{1}{64}$$

j) $$6^{-2} = \frac{1}{36}$$

e) $$-(-3)^{4} = -81$$