Question

Tentukan x
[tex] {2}^{x - 1} = {x}^{2} - 4[/tex]
Aljabar campur eksponen(mungkin)
Selamat mengerjakan :)))))
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Answer 1

Verified answer

Materi : Bentuk Akar dan Pangkat

2ˣ-¹ = x² - 4

2ˣ-¹ = ( x + 2 )( x - 2 )

Himpunan Penyelesaian

(1) 2ˣ-¹ = -2

2ˣ-¹ + 2¹ = 2⁰

x - 1 + 1 = 0

x = 0

(2) 2ˣ = 2 [ x = 1 ]

Semoga bisa membantu

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