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Question on: WAEC Mathematics - 1994

Solve the equation log8x - 4log8x = 2
A
1/4
B
1/2
C
1
D
2
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Correct Option: A
log8x - 4log8x = 2; log8x - log8x4 = 2
log8x/x4 = 2
x/x4 = 82 = 1/x3 = 64
x3 = (1/4)3; x = 1/4

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