Question

qual e o expoente
x
2=128

x
3=1
9

x
2= 9
3 4


x
4=1

Answer 1

a)2^x = 128
2^x = 2^7
x = 7

b)(3/9)^x = 1
(3/9)^x =(3/9)^0
x = 0

c)(2/3)^x = 9/4
(2/3)^x = 3²/2²
(2/3)^x = (3/2)²
(2/3)^x = (2/3)^-2
x = -2

d)4^x = 1
4^x = 4^0
x = 0