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^3logy=b
^2logx^2 + ^3logy^-3 = 4
2a -3b =4..(1)
^2logx + ^3logy^4 =13
a + 4b = 13...(2)
eliminasi 1)&2)
2a -3b =4.....(×1
a + 4b = 13...(×2
2a - 3b =4
2a + 8b =26
__________-
-11b = -22
b= 2
2a - 3b =4
2a -3(2) =4
2a =10
a=5
^2logx=a
^2logx=5
x=2^5=32
^3logy=b
^3logy=2
y=3^2=9
maka
^4log32 - ^9log9
hasilnya E