Respuesta :

CalculusGuy
1st, substitute x and y with 2 and -4, which'd be [tex]\frac{-4^{-5}}{2^{-3}}[/tex].
Then, simplify, to get [tex]-\frac{1}{128}[/tex].
This would be -0.0078125 in decimal form, or - 1/128 in fraction form.

Hope this helps! ^^
Write in exponential form,
[tex] - ( {2}^{2} ) ^{ - 5} \div {2}^{ - 3} [/tex]
Simplify the expression,
[tex] { - 2}^{10} \div {2}^{ - 3} [/tex]
Calculate the quotient,
[tex] { - 2}^{ - 7} [/tex]
Express with a positive exponent,
[tex] - \frac{1}{ {2}^{7} } [/tex]
Evaluate the power,
-1/128
Or - 0.0078125
Your answer is A.

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