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# Evaluate {(1by3)Power(-1) - (1by4)Power(-1)}Power(-1) - CBSE Class 8 - Mathematics

ConceptPowers with Negative Exponents

#### Question

Evaluate  {(1/3)^(-1) - (1/4)^(-1)}^(-1)

#### Solution

{(1/3)^(-1) - (1/4)^(-1)}^(-1) = {(3/1)^1 - (4/1)^1 }^(-1)     "     "(a^(-m) = 1/a^m)

= {3 - 4}^(-1) = (-1)^(-1) = 1/(-1) = -1

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#### APPEARS IN

NCERT Solution for Mathematics Textbook for Class 8 (2018 to Current)
Chapter 12: Exponents and Powers
Ex. 12.10 | Q: 6.1 | Page no. 198
Solution Evaluate {(1by3)Power(-1) - (1by4)Power(-1)}Power(-1) Concept: Powers with Negative Exponents.
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