Question

Tolong bantuin yaa, nomor brapa aja yang bisa, tolong ya

makasih

Answer 1

2.
8ˣ - 2² ⁻ ³ˣ = 3
2³ˣ - 2².2⁻ ³ˣ = 3
2³ˣ - 4.2⁻ ³ˣ = 3
misal y = 2³ˣ
y - 4/y = 3
y² - 4 = 3y
y² - 3y - 4 = 0
(y - 4)(y + 1) = 0
y = 4 atau y = -1
2³ˣ = 4 atau 2³ˣ = -1
2³ˣ = 2² atau ² log -1 = 3x
3x = 2 atau x = ²log -1
x = 2/3

3.