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