1.

Evaluateexponents and power​

Answer»

Solution :

\implies \:( ( \frac{1}{3} ) {}^{ - 1} - {( \frac{1}{4} )}^{ - 1} ) {}^{ - 1} \\ \\ \implies \: (( \frac{1}{ \frac{1}{3} } ) {}^{1} - ( \frac{1}{ \frac{1}{4} } ){}^{1} ) {}^{ - 1} \\ \\ \implies \: ( { (\frac{3}{1} )}^{1} - { (\frac{4}{1} )}^{1} ) {}^{ - 1} \\ \\ \implies \: {(3 - 4)}^{ - 1}

Option A is correct .

Formula USED :

\star \ \bold {{ {p}^{ - n} = \frac{1}{ {p}^{n} } }}


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