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Question
सरल कीजिए -
(25 ÷ 28) × 2–7
Simplify
Solution
घातांक के नियमों का उपयोग करते हुए, am ÷ an = (a)m – n और am × an = (a)m + n ...[∵ a शून्येतर पूर्णांक है।]
∴ (25 ÷ 28) × (2)–7 = (2)5 – 8 × (2)–7
= (2)–3 × (2)–7
= (2)–3 – 7
= (2)–10
= `1/2^10` ...`[∵ a^-m = 1/a^m]`
= `1/1024`
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Chapter 8: घातांक और घात - प्रश्नावली [Page 253]