(94,5)^2*(-2,5)^6 _________________ (-3,75)^5

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1. Giải thích các bước giải:

   $\dfrac{(94,5)^2.(-2,5)^6}{(-3,75)^5}$ 

   $=\dfrac{(\dfrac{189}{2})^2.(\dfrac{-5}{2})^6}{(\dfrac{-15}{4})^5}$ 

   $=\dfrac{\dfrac{189^2}{2^2}.\dfrac{5^6}{2^6}}{\dfrac{-15^5}{4^5}}$ 

   $=\dfrac{\dfrac{(3^3.7)^2.5^6}{2^8}}{\dfrac{-15^5}{2^{10}}}$ 

   $=\dfrac{\dfrac{3^6.7^2.5^6}{2^8}}{\dfrac{-15^5}{2^{10}}}$ 

   $=\dfrac{\dfrac{15^6.7^2}{2^8}}{\dfrac{-15^5}{2^{10}}}$ 

   $=\dfrac{15.7^2}{2^2}$ 

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