Question

Tent himpunan penelesaian persamaan eksponensial
64(pangkat x)-8(pngkat x+1)+16=0

Answer 1

64^x - 8^x + 1 + 16 = 0
2^6x - 2^3(x + 1) + 2^4
6x - 3x + 3 + 4 = 0
3x + 7
x= -7/3

Answer 2

64^x - 8^(x+1) + 16 = 0
2^6x - 2^(3x+3) + 16= 0
(2^3x)^2 - 8 (2^3x) + 16 =0
misal 
2^3x = a
a^2 - 8a + 16 = 0
(a-4)^2 = 0
a = 4
2^3x = 4 --> 2^3x = 2^2 
3x = 2
x = 2/3