Tolong di jawab semua dari 5a-7b pliss. Penting buat besok pagi. Tolong yg jawab jangan asal2an jangan cuman cari poin thok! Aku dah ngasih poin banyak. Tapi ak

5) a) (2^x)^2 - 10 (2^x) + 16 = 0
misal 2^x = p
p^2 - 10p + 16 = 0
(p-8)(p-2) = 0
p = 8 
2^x = 2^3
x = 3
p = 2
2^x = 2^1
x = 1
Hp = {1,3}

b) (3^x)^2 + 8 (3^x) - 9 = 0
misal 3^x = p
p^2 + 8p - 9 = 0
(p+9)(p-1) = 0
p = -9
3^x = -9 (Tidak Mungkin)
p = 1
3^x = 3^0
x = 0
Hp = {0}

6) a) 3^(2x + 2) + 8 (3^x) - 1 = 0
3^2x . 3^2 + 8 (3^x) - 1 = 0
(3^x)^2 . 3^2 + 8 (3^x) - 1 = 0
misal 3^x = p
9p^2 + 8p - 1 = 0
(9p-1)(p+1) = 0 
p = 1/9
3^x = 3^-2
x = -2
p = -1
3^x = -1 (Tidak Mungkin)
Hp = {-2}

b) (5^x)^2 . 1/5 - 6(5^x) + 25 = 0
misal 5^x = p
1/5p^2 - 6p + 25 = 0
(1/5p - 5) (p - 5)= 0
p = 25
5^x = 5^2
x = 2
p = 5
5^x = 5^1
x = 1
Hp = {1,2}

7) 
a) 2^x + 4.2^-x = 5
2^x + 4.(2^x)^-1 = 5
misal 2^x = p
p + 4p^-1 = 5
p + 4/p = 5 (xp masing masing ruas)
p^2 + 4 = 5p
p^2 - 5p + 4 = 0
(p - 4) (p-1) = 0
p = 4
2^x = 4
x = 2
p = 1
2^x = 2^0
x = 0

hp = {0,2}

Mohon maaf apabila ada kesalahan