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Solve for x: log_125 x = 1/3 - Mathematics

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Question

Solve for x:

`log_125 x = 1/3`

Sum
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Solution

Given: `log_125 x = 1/3`

Step-wise calculation:

1. Convert to exponential form:

`x = 125^(1/3)`

2. Write 125 as 53:

`x = (5^3)^(1/3)`

3. Use exponent rules:

`(5^3)^(1/3) = 5^(3 xx 1/3)`

`(5^3)^(1/3) = 5^1`

`(5^3)^(1/3) = 5`

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Chapter 7: Logarithms - Exercise 7A [Page 140]

APPEARS IN

Nootan Mathematics [English] Class 9 ICSE
Chapter 7 Logarithms
Exercise 7A | Q 5. (ii) | Page 140
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