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grin007 [14]
3 years ago
11

Please can you help me! z-² as a fraction

Mathematics
1 answer:
Oksanka [162]3 years ago
5 0
\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{  n}}}\implies \cfrac{1}{a^{-{{  n}}}}\\\\
-------------------------------\\\\
z^{-2}\implies \cfrac{1}{z^2}
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