3. a. ( x+4 )^3 = -729 b. ( x-2 )^4 = 1.296 Tlong di jwb segera y,, please!!

Mapel : Matematika
Kelas : IX SMP
Bab : Eksponen

Pembahasan :
(x + 4)³ = -729
(x + 4)³ = (-9)³
x + 4 = -9
x = -9 - 4
x = -13

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(x - 2)⁴ = 1296
(x - 2)⁴ = 6⁴
x - 2 = 6
x = 6 + 2
x = 8

a. (x+4)×3=(-729)
x+4=(-729÷3)
x+4=(-243)
x=(-243-4)
x=(-247)
b. (x-2)×4=1.296
x-2=1.296÷4
x-2=324
x=324+2
x=326
Maaf ya kalau salah