WAEC - Mathematics (1994 - No. 26)

Solve the equation log8x - 4log8x = 2
1/4
1/2
1
2
4

Explanation

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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