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प्रश्न
If x be any non-zero integer, then x–1 is equal to ______.
विकल्प
x
`1/x`
– x
`(-1)/x`
उत्तर
If x be any non-zero integer, then x–1 is equal to `underlinebb(1/x)`.
Explanation:
Using law of exponents, `a^-m = 1/a^m` ...[∵ A is non-zero integer]
Similarly, `x^-1 = 1/x`
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