If $\log_x 64 = 3$, find x.
A8
B4CORRECT
C16
D2
GCEFurther MathematicsSurds, Indices and Logarithms2020
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Why the answer is B, and why the others tempt you.
log_x 64 = 3 means x³ = 64. Since 4³ = 64, x = 4. The definition of logarithm converts the equation directly into an exponential form for easy solution.
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