Question

Tlong bantu kerjainno 2 sama 3 dong

Answer 1

2.
(2x + 4)⁵⁻ˣ = (2x + 4)³⁻²ˣ
=> 5 - x = 3 - 2x
=> 2x - x = 3 - 5
=> x = -2


3.
(x + 3)ˣ⁺³ = (x + 3)ˣ²⁻³ˣ⁻³
=> x + 3 = x² - 3x - 3
=> x² - 3x - x - 3 - 3 = 0
=> x² - 4x - 6 = 0

Tidak bisa difaktorkan secara bulat.. harus pakai rumus abc
x = (-b + √(b² - 4ac))/2a atau (-b - √(b² - 4ac))/2a
a = 1, b = -4, c = -6

Jawaban akhir:
x = (4 - √40) /2 = 2 - √10 = -1,162 
x = (4 + √40) /2 = 2 + √10 = 5,162