Question

como resolver isso?

a) (5/2) elevado a -3 d) (-2/8) elevado a -2

b) (6/3) elevado a -2 e) (-4/5) elevado a -4

c) (-49) elevado a -1 f) (-13) elevado a -3

Answer 1

a)(5/2)^-3
(2/5)³ = 2/5 . 2/5 . 2/5 = 8/125
b)(6/3)^-2 = (3/6)² = 3/6.3/6 = 9/36 = 1/4
c)(-49)^-1

(-1/49)^1 = -1/49
d)(-2/8)^-2 = (-8/2)² =  -8/2.- 8/2  = 64/4 = 16
e)(-4/5)^-4 = (- 5/4 )^4 = -5/4.-5/4.-5/4.-5/4 = 625/256 = 
f)(-13)^-3 = (-1/13)^3 = -1/13.-1/13.-1/13 = - 1/2197