shkyliek shkyliek
  • 20-02-2019
  • Mathematics
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Please explain answer

Please explain answer class=

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gmany
gmany gmany
  • 20-02-2019

Answer:

[tex]\large\boxed{\dfrac{1}{18}}[/tex]

Step-by-step explanation:

[tex]a^{-n}=\dfrac{1}{a^n}[/tex]

[tex]\text{Put}\ x=3\ \text{and}\ y=-2\ \text{to the expression}\ 2x^{-2}y^{-2}:\\\\2(3^{-2})(-2)^{-2}=2\left(\dfrac{1}{3^2}\right)\left(\dfrac{1}{(-2)^2}\right)=2\left(\dfrac{1}{9}\right)\left(\dfrac{1}{4}\right)=\dfrac{2}{36}=\dfrac{1}{18}[/tex]

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