Mohon bantuannya :)

Jawab

3ˣ⁺² + 3⁵⁻ˣ - 20 = 0
3² .3ˣ  + 3⁵. 3⁻ˣ  - 20 = 0
misal 3ˣ = a
9a + 243/a  - 20 = 0 ...}kalikan a
9a² - 20a + 243 = 0
a1 . a2 = 243/9 = 27

3ˣ₁. 3ˣ₂ = 27 = 3³
3⁽ˣ₁⁺ˣ₂⁾ = 3³
x1 + x2 = 3

(3ˣ₁)(3ˣ₂) = 3ˣ₁ˣ₂ =