Question

Kakak tolong dibantu yaaaa, .

Answer 1

Misal :
²log x = a
²log y = b

²log x + ²log y³ = 13
a + 3b = 13 ..........persamaan 1

²log x - ²log y = 5
a - b = 5 ..........persamaan 2

persamaan 1 dan 2 dieliminasi
a + 3b = 13
a - b = 5 dikurangi

4b = 8
b = 2
²log y = 2
y = 2²
y = 4

²log x - ²log y = 5
²log x - 2 = 5
²log x = 5 + 2
²log x = 7
x = 2 pangkat 7
x = 128

x + y = 128 + 4 = 132


susah nulisnya,hehe