Tentukan hp pers2log(2x-10)=3

Question

Matematika Diposting : 2017-11-07 Diupdate : 2017-11-12 mhmdfikra

Pertanyaan

Answer 1

²log (2x - 10) = 3
²log (2x - 10) = ²log2³
²log (2x - 10) = ²log8

2x - 10 = 8
2x = 8 + 10
2x = 18
x = 18/2
x = 9

HP = {9}

Answer 2

2log(2x-10) = 3 (ubah 3 menjadi 2log8, karena 2^3 = 8)

2log(2x-10)=2log8 (sekarang bisa dihilangkan 2log nya)

2x-10 = 8

2x=8+10

x=18/2

x=9

hp=(9)