Please Bantui soal no 1-2 besok dikumpul soalnya! Beserta cara jalannya yaaa:') #makaasih

Eksponen
1.
3²ˣ - 10 3ˣ⁺¹ + 81 = 0
(3ˣ)² - 10(3)(3ˣ) + 81= 0
misal 3ˣ = a
a² -30 a + 81= 0
(a- 27)(a-3) = 0
a = 27  atau a = 3

3ˣ = 27 --> x = 3
3ˣ = 3 --> x = 1
x1> x2  --> x1 = 3 ,  x2 = 1
x1 - x2= 3 - 1 = 2

2.  
2ˣ / (4)ˣ⁺² = 16. 4ˣ
2ˣ. 4⁻⁽ˣ⁺²⁾ = 2⁴. 2²ˣ
2ˣ. 2⁻²⁽ˣ⁺²⁾ = 2⁴.2²ˣ
.
x -2(x+2) = 4 + 2x
x - 2x - 4 = 4 + 2x
x - 2x - 2x = 4 + 4
-3x = 8
x = - 8/3