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Question
The value of 5–2 is equal to 25.
Options
True
False
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Solution
This statement is False.
Explanation:
Using law of exponents,
`a^-m = 1/a^m` ...[∵ a is non-zero integer]
∴ `5^-2 = 1/5^2 = 1/25`
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Simplify:
`[(1/2)^2 - (1/4)^3]^-1 xx 2^-3`
Simplify:
`[(4/3)^-2 - (3/4)^2]^((-2))`
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