1. x = 5.
2. 2x² - 9x + 20 = 0
3. x = 2 atau x = -1.
4. x = 1.
5. x =

Penjelasan dengan langkah-langkah:

Diketahui:

aᵃ x aᵇ = aᵃ⁺b

aᵃ x aᵇ = aᵃ⁻ᵇ

Ditanya:

Tentukan nilai x

Jawab:

5ˣ⁻⁹ = 5²⁽³⁻ˣ⁾

5ˣ⁻⁹ = 5⁶⁻²ˣ

x-9 = 6-2x

3x = 15

x = 5

5²⁽ˣ²⁻³ˣ⁺⁷⁾ = 5³⁽ˣ⁻²⁾

5²ˣ²⁻⁶ˣ⁺¹⁴ = 5³ˣ⁻⁶

2x² -6x + 14 = 3x - 6

2x² -6x - 3x + 14 +  6 = 0

2x² - 9x + 20 = 0

2ˣ²⁺ˣ = 2²⁽ˣ⁺¹⁾

x² + x = 2x + 2

x² - x - 2 = 0

(x - 2)(x+1) = 0

x = 2 atau x = -1

(9²ˣ⁺⁴) =( )⁻³ˣ⁻³

3²ˣ⁺⁴ = 3⁻¹⁽⁻³ˣ⁻³⁾

2x + 4 = 3x +3

-x = -1

x = 1

2ˣ⁻ˣ² = 2⁰

x² - x = 0

x² = x

x =

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