Pertanyaan

Dalam bentuk pangkat positif ( x y ) − 2 x − 2 − y − 2 = ...

Dalam bentuk pangkat positif $\frac{x ^{- 2} - y ^{- 2}}{( x y ) ^{- 2}} = ...$

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$fraction numerator x to the power of negative 2 end exponent minus y to the power of negative 2 end exponent over denominator open parentheses x y close parentheses to the power of negative 2 end exponent end fraction equals fraction numerator open parentheses begin display style 1 over x squared minus 1 over y squared end style close parentheses over denominator begin display style fraction numerator 1 over denominator begin display style open parentheses x y close parentheses squared end style end fraction end style end fraction space space space space space space space space space space space space space space space space space space equals open parentheses 1 over x squared minus 1 over y squared close parentheses open parentheses x y close parentheses squared space space space space space space space space space space space space space space space space space space equals open parentheses 1 over x squared minus 1 over y squared close parentheses open parentheses x squared y squared close parentheses space space space space space space space space space space space space space space space space space space equals fraction numerator x squared y squared over denominator x squared end fraction minus fraction numerator x squared y squared over denominator y squared end fraction space space space space space space space space space space space space space space space space space space equals y squared minus x squared space space space space space space space space space space space space space space space space space space equals negative open parentheses x squared minus y squared close parentheses space space space space space space space space space space space space space space space space space space equals negative open parentheses x plus y close parentheses open parentheses x minus y close parentheses$