Jawapan

2016-10-07T11:41:16+08:00
Sesiapa nak tuisyen online math bole whatsapp saya 0172847059 bayaran hanya RM1 ..terima kasih...terbuka kepada semua had umur pelajar
Jawapan Paling Bijak!
2016-10-07T13:51:39+08:00
3^x X 3^2 - 3^x X 3^1 = 54
Let Y= 3^x

Y X 3^2 - Y X 3 = 54
9Y-3Y= 54
6Y=54
Y=9
3^x = 9
3^x = 3^2
x=2

Harapla jawapan betul :)
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