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मान ज्ञात कीजिए: (2−1 × 4−1) ÷ 2−2

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Question

मान ज्ञात कीजिए:

(2−1 × 4−1) ÷ 2−2

Sum
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Solution

(2−1 × 4−1) ÷ 2−2

= `[2^-1 xx (2^-2)^-1] ÷ 2^-2`

= `[2^-1 xx 2^-2]÷ 2^-2`      ...[∵ (am)n = amn]

= `[2^(-1 + (-2))]÷2^-2`           ...[∵ am × an = am+n]1

= `[2^(-1-2) ÷ 2^-2]`

= `2^-3 ÷ 2^-2`

= `2^(-3 - (-2))`        ...[∵ am ÷ an = am−n ]

= 2−3+2 = 2−1

= `1/2`

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ऋणात्मक घातांकों की घात
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Chapter 10: घातांक और घात - प्रश्नावली 10.1 [Page 133]

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NCERT Ganit [Hindi] Class 8
Chapter 10 घातांक और घात
प्रश्नावली 10.1 | Q 3. (ii) | Page 133
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