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prisoha [69]
3 years ago
10

Simplify (4x^-2y^3 ÷ xy^-4)^-2

Mathematics
2 answers:
Artyom0805 [142]3 years ago
6 0
<span><span>(<span><span>‌<span><span><span>4<span>x<span>−2</span></span></span><span>y^3</span></span>x</span></span>‌<span>y<span>−4</span></span></span>)</span><span>−2</span></span><span>
=<span><span>‌<span><span><span>x6</span><span>y^8/</span></span><span>16<span>y^6</span></span></span></span>‌</span></span><span>
=<span>‌<span><span><span>x^6</span><span>y^2/</span></span><span>16

Hope this helps:)
</span></span></span></span>
Alex17521 [72]3 years ago
4 0
\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\&#10;a^{-n} \implies \cfrac{1}{a^n}&#10;\qquad \qquad&#10;\cfrac{1}{a^n}\implies a^{-n}&#10;\qquad \qquad &#10;a^n\implies \cfrac{1}{a^{-n}}\\\\&#10;-------------------------------\\\\

\bf (4x^{-2}y^3 \div xy^{-4})^{-2}\implies \left( \cfrac{4x^{-2}y^3}{xy^{-4}} \right)^{-2}\implies \left( \cfrac{xy^{-4}}{4x^{-2}y^3} \right)^{2}&#10;\\\\\\&#10;\textit{then we distribute  the exponent}\left( \cfrac{x^2y^{-4\cdot 2}}{4^2x^{-2\cdot 2}y^{3\cdot 2}} \right)\implies \cfrac{x^2y^{-8}}{16x^{-4}y^6}&#10;\\\\\\&#10;\cfrac{x^2\cdot x^4}{16y^6\cdot y^8}\implies \cfrac{x^{2+4}}{16y^{6+8}}\implies \cfrac{x^6}{16y^{14}}
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