Question

Quanto é ?

a)(2/3)^-1
b)(1/2)^-3
c)(5/2)^-2
d)( 7-/4)^-2

Answer 1

a)

= (2/3)^-1

= (3/2)^1

= 3/2

b)

= (1/2)^-3

= (2)^3

= 8

c)

= (5/2)^-2

= (2/5)^2

= 4/25

d)

= ( 7-/4)^-2

= (-7/4)^-2

= (-4/7)^2

= 16/49